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Schedule III - Real Estate and Accumulated Depreciation (Details) (USD $) | 12 Months Ended |  |  |
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | $ 106,762,238 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 197,046,698 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 376,664,815 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 15,435,489 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 195,091,303 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 394,055,709 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 589,147,012 us-gaap_RealEstateGrossAtCarryingValue | 476,168,824 us-gaap_RealEstateGrossAtCarryingValue | 398,811,830 us-gaap_RealEstateGrossAtCarryingValue | 340,073,911 us-gaap_RealEstateGrossAtCarryingValue
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 59,089,851 us-gaap_RealEstateAccumulatedDepreciation | 65,436,739 us-gaap_RealEstateAccumulatedDepreciation | 58,856,688 us-gaap_RealEstateAccumulatedDepreciation | 68,589,778 us-gaap_RealEstateAccumulatedDepreciation
Borman Center, MI [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BormanCenterMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 550,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BormanCenterMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 562,404 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BormanCenterMiMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 1,087,596 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BormanCenterMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 550,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BormanCenterMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,650,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BormanCenterMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 2,200,000 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BormanCenterMiMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 1,618,022 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BormanCenterMiMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 1977 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Capital Plaza, KY [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CapitalPlazaKyMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 7,379 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CapitalPlazaKyMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 2,240,607 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CapitalPlazaKyMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 3,510,133 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CapitalPlazaKyMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 7,379 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CapitalPlazaKyMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 5,750,740 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CapitalPlazaKyMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 5,758,119 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CapitalPlazaKyMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 2,887,183 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CapitalPlazaKyMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 1978 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Grayling Plaza, MI [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GraylingPlazaMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 200,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GraylingPlazaMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,778,657 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GraylingPlazaMiMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GraylingPlazaMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 200,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GraylingPlazaMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,778,657 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GraylingPlazaMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,978,657 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GraylingPlazaMiMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 1,363,755 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GraylingPlazaMiMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 1984 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Marshall Plaza Two, MI [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MarshallPlazaTwoMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 0 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MarshallPlazaTwoMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 4,662,230 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MarshallPlazaTwoMiMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 159,688 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MarshallPlazaTwoMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 0 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MarshallPlazaTwoMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 4,821,918 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MarshallPlazaTwoMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 4,821,918 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MarshallPlazaTwoMiMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 2,822,969 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MarshallPlazaTwoMiMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 1990 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
North Lakeland Plaza, FL [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NorthLakelandPlazaFlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 1,641,879 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NorthLakelandPlazaFlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 6,364,379 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NorthLakelandPlazaFlMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 2,052,496 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NorthLakelandPlazaFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 1,641,879 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NorthLakelandPlazaFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 8,416,875 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NorthLakelandPlazaFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 10,058,754 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NorthLakelandPlazaFlMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 5,126,106 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NorthLakelandPlazaFlMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 1987 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Oscoda Plaza, MI [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_OscodaPlazaMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 183,295 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_OscodaPlazaMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,872,854 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_OscodaPlazaMiMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_OscodaPlazaMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 183,295 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_OscodaPlazaMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,872,854 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_OscodaPlazaMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 2,056,149 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_OscodaPlazaMiMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 1,433,536 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_OscodaPlazaMiMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 1984 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Rapids Associates, MI [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RapidsAssociatesMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 705,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RapidsAssociatesMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 6,854,790 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RapidsAssociatesMiMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 2,157,041 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RapidsAssociatesMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 705,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RapidsAssociatesMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 9,011,831 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RapidsAssociatesMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 9,716,831 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RapidsAssociatesMiMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 4,600,697 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RapidsAssociatesMiMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 1990 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
West Frankfort Plaza, IL [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WestFrankfortPlazaIlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 8,002 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WestFrankfortPlazaIlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 784,077 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WestFrankfortPlazaIlMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 202,463 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WestFrankfortPlazaIlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 8,002 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WestFrankfortPlazaIlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 986,540 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WestFrankfortPlazaIlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 994,542 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WestFrankfortPlazaIlMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 700,383 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WestFrankfortPlazaIlMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 1982 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Omaha Store, NE [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_OmahaStoreNeMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 150,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_OmahaStoreNeMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 0 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_OmahaStoreNeMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_OmahaStoreNeMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 150,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_OmahaStoreNeMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 0 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_OmahaStoreNeMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 150,000 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_OmahaStoreNeMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 0 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_OmahaStoreNeMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 1995 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Wichita Store, KS [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 1,669,449 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WichitaStoreKsMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 1,039,195 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WichitaStoreKsMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,690,644 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WichitaStoreKsMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | (48,910)us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WichitaStoreKsMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 1,139,677 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WichitaStoreKsMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,541,252 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WichitaStoreKsMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 2,680,929 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WichitaStoreKsMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 775,757 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WichitaStoreKsMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 1995 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Monroeville, PA [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MonroevillePaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 6,332,158 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MonroevillePaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 2,249,724 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MonroevillePaMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | (2,586,265)us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MonroevillePaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 3,153,890 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MonroevillePaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 2,841,727 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MonroevillePaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 5,995,617 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MonroevillePaMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 968,975 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MonroevillePaMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 1996 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Boynton Beach, FL [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BoyntonBeachFl1Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 1,534,942 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BoyntonBeachFl1Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 2,043,122 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BoyntonBeachFl1Member |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 3,754,994 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BoyntonBeachFl1Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 1,534,942 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BoyntonBeachFl1Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 5,798,116 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BoyntonBeachFl1Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 7,333,058 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BoyntonBeachFl1Member |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 1,343,608 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BoyntonBeachFl1Member |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 1996 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Lawrence, KS [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LawrenceKsMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 981,331 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LawrenceKsMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 3,000,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LawrenceKsMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | (1,510,873)us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LawrenceKsMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 419,791 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LawrenceKsMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 2,050,667 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LawrenceKsMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 2,470,458 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LawrenceKsMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 1,221,625 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LawrenceKsMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 1997 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Waterford, MI [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 579,356 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WaterfordMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 971,009 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WaterfordMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,562,869 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WaterfordMiMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 135,390 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WaterfordMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 971,009 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WaterfordMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,698,259 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WaterfordMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 2,669,268 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WaterfordMiMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 720,723 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WaterfordMiMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 1997 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Chesterfield Township, MI [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 636,140 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ChesterfieldTownshipMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 1,350,590 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ChesterfieldTownshipMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,757,830 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ChesterfieldTownshipMiMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | (46,164)us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ChesterfieldTownshipMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 1,350,590 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ChesterfieldTownshipMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,711,666 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ChesterfieldTownshipMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 3,062,256 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ChesterfieldTownshipMiMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 706,644 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ChesterfieldTownshipMiMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 1998 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Grand Blanc, MI [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 607,750 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GrandBlancMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 1,104,285 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GrandBlancMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,998,919 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GrandBlancMiMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 43,929 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GrandBlancMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 1,104,285 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GrandBlancMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 2,042,848 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GrandBlancMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 3,147,133 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GrandBlancMiMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 812,241 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GrandBlancMiMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 1998 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Pontiac, MI [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 582,728 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PontiacMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 1,144,190 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PontiacMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,808,955 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PontiacMiMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | (113,506)us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PontiacMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 1,144,190 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PontiacMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,695,449 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PontiacMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 2,839,639 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PontiacMiMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 690,483 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PontiacMiMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 1998 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Mt Pleasant Shopping Ctr, MI [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MtPleasantShoppingCenterMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 907,600 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MtPleasantShoppingCenterMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 8,081,968 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MtPleasantShoppingCenterMiMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 1,024,052 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MtPleasantShoppingCenterMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 907,600 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MtPleasantShoppingCenterMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 9,106,020 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MtPleasantShoppingCenterMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 10,013,620 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MtPleasantShoppingCenterMiMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 4,808,049 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MtPleasantShoppingCenterMiMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 1973 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Rochester, MI [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 1,582,374 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RochesterMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 2,438,740 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RochesterMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 2,188,050 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RochesterMiMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 1,949 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RochesterMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 2,438,740 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RochesterMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 2,189,999 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RochesterMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 4,628,739 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RochesterMiMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 848,601 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RochesterMiMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 1999 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Ypsilanti, MI [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 1,429,190 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_YpsilantiMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 2,050,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_YpsilantiMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 2,222,097 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_YpsilantiMiMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 32,641 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_YpsilantiMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 2,050,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_YpsilantiMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 2,254,738 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_YpsilantiMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 4,304,738 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_YpsilantiMiMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 844,665 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_YpsilantiMiMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 1999 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Petoskey, MI [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 994,116 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PetoskeyMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 0 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PetoskeyMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 2,332,473 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PetoskeyMiMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 1,179 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PetoskeyMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 0 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PetoskeyMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 2,333,652 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PetoskeyMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 2,333,652 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PetoskeyMiMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 855,585 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PetoskeyMiMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2000 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Flint, MI 1 [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 1,499,465 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FlintMi1Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 2,026,625 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FlintMi1Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,879,700 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FlintMi1Member |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | (1,201)us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FlintMi1Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 2,026,625 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FlintMi1Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,878,499 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FlintMi1Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 3,905,124 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FlintMi1Member |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 657,481 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FlintMi1Member |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2000 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Flint, MI 2 [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 1,290,219 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FlintMi2Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 1,477,680 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FlintMi2Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 2,241,293 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FlintMi2Member |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FlintMi2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 1,477,680 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FlintMi2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 2,241,293 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FlintMi2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 3,718,973 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FlintMi2Member |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 777,445 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FlintMi2Member |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2001 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
New Baltimore, MI [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 1,100,713 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NewBaltimoreMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 1,250,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NewBaltimoreMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 2,285,781 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NewBaltimoreMiMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | (16,502)us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NewBaltimoreMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 1,250,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NewBaltimoreMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 2,269,279 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NewBaltimoreMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 3,519,279 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NewBaltimoreMiMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 758,965 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NewBaltimoreMiMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2001 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Flint, MI 3 [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 2,969,578 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FlintMi3Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 1,729,851 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FlintMi3Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,798,091 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FlintMi3Member |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 660 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FlintMi3Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 1,729,851 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FlintMi3Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,798,751 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FlintMi3Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 3,528,602 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FlintMi3Member |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 571,441 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FlintMi3Member |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2002 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Indianapolis, IN [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_IndianapolisInMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 180,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_IndianapolisInMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,117,617 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_IndianapolisInMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_IndianapolisInMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 180,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_IndianapolisInMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,117,617 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_IndianapolisInMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,297,617 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_IndianapolisInMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 362,158 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_IndianapolisInMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2002 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Big Rapids, MI [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BigRapidsMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 1,201,675 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BigRapidsMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 2,014,107 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BigRapidsMiMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | (2,000)us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BigRapidsMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 1,201,675 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BigRapidsMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 2,012,107 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BigRapidsMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 3,213,782 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BigRapidsMiMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 591,097 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BigRapidsMiMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2003 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Flint, MI 4 [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FlintMi4Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 0 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FlintMi4Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 471,272 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FlintMi4Member |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | (201,810)us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FlintMi4Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 0 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FlintMi4Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 269,462 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FlintMi4Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 269,462 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FlintMi4Member |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 125,748 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FlintMi4Member |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2003 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 20 years |  |  |
Canton Twp, MI [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CantonTwpMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 1,550,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CantonTwpMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 2,132,096 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CantonTwpMiMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 23,020 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CantonTwpMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 1,550,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CantonTwpMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 2,155,116 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CantonTwpMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 3,705,116 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CantonTwpMiMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 597,098 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CantonTwpMiMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2003 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Flint, MI 5 [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 3,441,685 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FlintMi5Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 1,537,400 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FlintMi5Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,961,674 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FlintMi5Member |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FlintMi5Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 1,537,400 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FlintMi5Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,961,674 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FlintMi5Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 3,499,074 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FlintMi5Member |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 531,371 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FlintMi5Member |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2004 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Webster, NY [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WebsterNyMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 1,600,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WebsterNyMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 2,438,781 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WebsterNyMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WebsterNyMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 1,600,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WebsterNyMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 2,438,781 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WebsterNyMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 4,038,781 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WebsterNyMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 657,967 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WebsterNyMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2004 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Albion, NY [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AlbionNyMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 1,900,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AlbionNyMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 3,037,864 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AlbionNyMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AlbionNyMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 1,900,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AlbionNyMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 3,037,864 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AlbionNyMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 4,937,864 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AlbionNyMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 768,962 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AlbionNyMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2004 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Flint, MI 6 [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 2,631,221 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FlintMi6Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 1,029,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FlintMi6Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 2,165,463 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FlintMi6Member |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | (6,666)us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FlintMi6Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 1,029,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FlintMi6Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 2,158,797 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FlintMi6Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 3,187,797 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FlintMi6Member |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 546,405 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FlintMi6Member |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2004 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Lansing, MI [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LansingMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 785,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LansingMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 348,501 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LansingMiMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 3,045 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LansingMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 785,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LansingMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 351,546 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LansingMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,136,546 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LansingMiMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 92,245 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LansingMiMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2004 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Boynton Beach, FL [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BoyntonBeachFlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 1,569,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BoyntonBeachFlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 2,363,524 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BoyntonBeachFlMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BoyntonBeachFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 1,569,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BoyntonBeachFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 2,363,524 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BoyntonBeachFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 3,932,524 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BoyntonBeachFlMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 633,826 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BoyntonBeachFlMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2004 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Midland, MI [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MidlandMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 2,350,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MidlandMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 2,313,413 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MidlandMiMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | (79,235)us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MidlandMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 2,268,695 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MidlandMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 2,315,483 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MidlandMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 4,584,178 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MidlandMiMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 547,439 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MidlandMiMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2005 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Grand Rapids, MI [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 2,959,784 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GrandRapidsMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 1,450,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GrandRapidsMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 2,646,591 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GrandRapidsMiMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GrandRapidsMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 1,450,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GrandRapidsMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 2,646,591 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GrandRapidsMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 4,096,591 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GrandRapidsMiMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 617,539 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GrandRapidsMiMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2005 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Delta Township, MI [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 3,090,351 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_DeltaTownshipMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 2,075,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_DeltaTownshipMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 2,535,971 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_DeltaTownshipMiMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 7,004 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_DeltaTownshipMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 2,075,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_DeltaTownshipMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 2,542,975 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_DeltaTownshipMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 4,617,975 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_DeltaTownshipMiMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 582,824 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_DeltaTownshipMiMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2005 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Roseville, MI [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 2,336,328 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RosevilleMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 1,771,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RosevilleMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 2,327,052 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RosevilleMiMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RosevilleMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 1,771,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RosevilleMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 2,327,052 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RosevilleMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 4,098,052 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RosevilleMiMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 530,857 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RosevilleMiMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2005 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Mt Pleasant, MI [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 1,252,087 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MtPleasantMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 1,075,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MtPleasantMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,432,390 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MtPleasantMiMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 4,787 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MtPleasantMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 1,075,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MtPleasantMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,437,177 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MtPleasantMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 2,512,177 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MtPleasantMiMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 326,346 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MtPleasantMiMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2005 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
N Cape May, NJ [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NCapeMayNjMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 1,075,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NCapeMayNjMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,430,092 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NCapeMayNjMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 495 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NCapeMayNjMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 1,075,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NCapeMayNjMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,430,587 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NCapeMayNjMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 2,505,587 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NCapeMayNjMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 324,859 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NCapeMayNjMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2005 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Summit Twp, MI [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 1,431,882 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SummitTwpMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 998,460 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SummitTwpMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,336,357 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SummitTwpMiMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 12,686 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SummitTwpMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 998,460 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SummitTwpMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,349,043 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SummitTwpMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 2,347,503 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SummitTwpMiMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 277,204 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SummitTwpMiMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2006 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Livonia, MI [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 4,240,564 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LivoniaMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 1,200,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LivoniaMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 3,441,694 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LivoniaMiMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 817,589 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LivoniaMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 1,200,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LivoniaMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 4,259,283 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LivoniaMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 5,459,283 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LivoniaMiMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 778,062 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LivoniaMiMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2007 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Barnesville, GA [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BarnesvilleGaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 932,500 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BarnesvilleGaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 2,091,514 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BarnesvilleGaMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 5,490 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BarnesvilleGaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 932,500 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BarnesvilleGaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 2,097,004 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BarnesvilleGaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 3,029,504 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BarnesvilleGaMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 377,868 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BarnesvilleGaMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2007 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
East Lansing, MI [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_EastLansingMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 240,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_EastLansingMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 54,531 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_EastLansingMiMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_EastLansingMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 240,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_EastLansingMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 54,531 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_EastLansingMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 294,531 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_EastLansingMiMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 9,519 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_EastLansingMiMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2007 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Plainfield, IN [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PlainfieldInMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 4,549,758 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PlainfieldInMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 0 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PlainfieldInMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 114,383 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PlainfieldInMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 4,664,141 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PlainfieldInMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 0 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PlainfieldInMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 4,664,141 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PlainfieldInMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 0 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PlainfieldInMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2007 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Macomb Township, MI 1 [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 3,955,574 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MacombTownshipMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 2,621,500 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MacombTownshipMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 3,484,212 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MacombTownshipMiMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | (83,479)us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MacombTownshipMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 2,537,222 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MacombTownshipMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 3,485,011 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MacombTownshipMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 6,022,233 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MacombTownshipMiMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 595,339 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MacombTownshipMiMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2008 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Shelby Township, MI [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 3,383,595 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ShelbyTownshipMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 2,055,174 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ShelbyTownshipMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 2,533,876 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ShelbyTownshipMiMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 47,775 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ShelbyTownshipMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 2,058,474 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ShelbyTownshipMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 2,578,351 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ShelbyTownshipMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 4,636,825 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ShelbyTownshipMiMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 412,803 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ShelbyTownshipMiMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2008 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Silver Springs Shores, FL [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 3,637,014 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SilverSpringsShoresFlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 1,975,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SilverSpringsShoresFlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 2,504,112 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SilverSpringsShoresFlMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | (5,400)us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SilverSpringsShoresFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 1,975,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SilverSpringsShoresFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 2,498,712 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SilverSpringsShoresFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 4,473,712 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SilverSpringsShoresFlMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 374,942 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SilverSpringsShoresFlMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2009 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Brighton, MI [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BrightonMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 1,365,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BrightonMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 2,802,036 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BrightonMiMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 5,615 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BrightonMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 1,365,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BrightonMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 2,807,651 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BrightonMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 4,172,651 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BrightonMiMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 409,370 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BrightonMiMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2009 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Port St John, FL [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PortStJohnFlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 2,320,860 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PortStJohnFlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 2,402,641 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PortStJohnFlMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 880 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PortStJohnFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 2,320,860 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PortStJohnFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 2,403,521 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PortStJohnFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 4,724,381 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PortStJohnFlMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 340,484 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PortStJohnFlMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2009 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Lowell, MI [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LowellMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 890,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LowellMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,930,182 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LowellMiMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 10,190 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LowellMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 890,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LowellMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,940,372 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LowellMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 2,830,372 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LowellMiMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 254,610 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LowellMiMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2009 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Southfield, MI 1 [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SouthfieldMi1Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 1,200,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SouthfieldMi1Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 125,616 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SouthfieldMi1Member |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 2,064 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SouthfieldMi1Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 1,200,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SouthfieldMi1Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 127,690 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SouthfieldMi1Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,327,690 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SouthfieldMi1Member |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 16,617 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SouthfieldMi1Member |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2009 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Atchison, KS [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AtchisonKsMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 943,750 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AtchisonKsMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 3,021,672 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AtchisonKsMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AtchisonKsMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 823,170 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AtchisonKsMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 3,142,252 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AtchisonKsMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 3,965,422 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AtchisonKsMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 351,996 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AtchisonKsMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2010 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Johnstown, OH [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 2,384,927 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JohnstownOhMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 485,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JohnstownOhMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 2,799,502 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JohnstownOhMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JohnstownOhMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 485,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JohnstownOhMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 2,799,502 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JohnstownOhMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 3,284,502 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JohnstownOhMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 314,945 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JohnstownOhMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2010 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Lake in the Hills, IL [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LakeInHillsIlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 2,135,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LakeInHillsIlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 3,328,560 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LakeInHillsIlMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LakeInHillsIlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 1,690,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LakeInHillsIlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 3,773,560 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LakeInHillsIlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 5,463,560 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LakeInHillsIlMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 418,963 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LakeInHillsIlMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2010 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Concord, NC [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ConcordNcMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 7,676,305 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ConcordNcMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 0 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ConcordNcMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ConcordNcMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 7,676,305 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ConcordNcMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 0 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ConcordNcMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 7,676,305 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ConcordNcMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 0 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ConcordNcMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2010 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Antioch, IL [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 1,669,449 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AntiochIlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 1,087,884 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AntiochIlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 0 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AntiochIlMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AntiochIlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 1,087,884 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AntiochIlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 0 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AntiochIlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,087,884 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AntiochIlMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 0 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AntiochIlMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2010 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
St Augustine Shores, FL [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_StAugustineShoresFlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 1,700,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_StAugustineShoresFlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,973,929 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_StAugustineShoresFlMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | (4,754)us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_StAugustineShoresFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 1,700,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_StAugustineShoresFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,969,175 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_StAugustineShoresFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 3,669,175 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_StAugustineShoresFlMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 202,933 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_StAugustineShoresFlMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2010 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Atlantic Beach, FL [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 3,452,182 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AtlanticBeachFlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 1,650,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AtlanticBeachFlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,904,357 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AtlanticBeachFlMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 1,262 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AtlanticBeachFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 1,650,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AtlanticBeachFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,905,619 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AtlanticBeachFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 3,555,619 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AtlanticBeachFlMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 198,398 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AtlanticBeachFlMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2010 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Mansfield, CT [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 2,170,284 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MansfieldCtMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 700,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MansfieldCtMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,902,191 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MansfieldCtMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 508 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MansfieldCtMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 700,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MansfieldCtMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,902,699 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MansfieldCtMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 2,602,699 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MansfieldCtMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 196,213 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MansfieldCtMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2010 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Spring Grove, IL [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 2,313,000 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SpringGroveIlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 1,191,199 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SpringGroveIlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 0 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SpringGroveIlMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 968 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SpringGroveIlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 1,192,167 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SpringGroveIlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 0 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SpringGroveIlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,192,167 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SpringGroveIlMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 0 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SpringGroveIlMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2010 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Ann Arbor, MI [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AnnArborMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 0 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AnnArborMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 3,061,507 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AnnArborMiMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 2,634,651 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AnnArborMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 2,660,582 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AnnArborMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 3,035,576 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AnnArborMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 5,696,158 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AnnArborMiMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 321,871 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AnnArborMiMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2010 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Tallahassee, FL [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 1,628,000 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_TallahasseeFlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 0 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_TallahasseeFlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,482,462 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_TallahasseeFlMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_TallahasseeFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 0 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_TallahasseeFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,482,462 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_TallahasseeFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,482,462 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_TallahasseeFlMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 149,791 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_TallahasseeFlMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2010 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Wilmington, NC [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 2,186,000 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WilmingtonNcMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 1,500,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WilmingtonNcMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,348,591 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WilmingtonNcMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WilmingtonNcMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 1,500,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WilmingtonNcMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,348,591 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WilmingtonNcMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 2,848,591 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WilmingtonNcMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 129,240 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WilmingtonNcMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2011 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Marietta, GA [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 900,000 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MariettaGaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 575,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MariettaGaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 696,297 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MariettaGaMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 6,359 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MariettaGaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 575,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MariettaGaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 702,656 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MariettaGaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,277,656 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MariettaGaMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 61,402 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MariettaGaMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2011 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Baltimore, MD [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 2,534,000 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BaltimoreMdMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 2,610,430 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BaltimoreMdMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 0 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BaltimoreMdMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | (3,447)us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BaltimoreMdMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 2,606,983 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BaltimoreMdMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 0 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BaltimoreMdMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 2,606,983 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BaltimoreMdMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 0 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BaltimoreMdMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2011 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Dallas, TX [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 1,844,000 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_DallasTxMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 701,320 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_DallasTxMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 778,905 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_DallasTxMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 1,042,730 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_DallasTxMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 701,320 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_DallasTxMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,821,635 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_DallasTxMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 2,522,955 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_DallasTxMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 144,737 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_DallasTxMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2011 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Chandler, AZ [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 1,550,203 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ChandlerAzMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 332,868 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ChandlerAzMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 793,898 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ChandlerAzMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 360 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ChandlerAzMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 332,868 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ChandlerAzMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 794,258 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ChandlerAzMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,127,126 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ChandlerAzMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 64,571 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ChandlerAzMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2011 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
New Lenox, IL [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 1,192,464 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NewLenoxIlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 1,422,488 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NewLenoxIlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 0 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NewLenoxIlMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NewLenoxIlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 1,422,488 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NewLenoxIlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 0 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NewLenoxIlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,422,488 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NewLenoxIlMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 0 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NewLenoxIlMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2011 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Roseville, CA [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 4,752,000 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RosevilleCaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 2,800,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RosevilleCaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 3,695,455 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RosevilleCaMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | (96,364)us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RosevilleCaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 2,695,636 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RosevilleCaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 3,703,455 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RosevilleCaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 6,399,091 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RosevilleCaMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 308,554 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RosevilleCaMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2011 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Fort Walton Beach, FL [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 1,768,000 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FortWaltonBeachFlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 542,200 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FortWaltonBeachFlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,958,790 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FortWaltonBeachFlMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 303 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FortWaltonBeachFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 542,200 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FortWaltonBeachFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,959,093 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FortWaltonBeachFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 2,501,293 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FortWaltonBeachFlMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 151,009 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FortWaltonBeachFlMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2011 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Leawood, KS [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 3,204,294 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LeawoodKsMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 989,622 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LeawoodKsMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 3,003,541 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LeawoodKsMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 16,198 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LeawoodKsMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 989,622 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LeawoodKsMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 3,019,739 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LeawoodKsMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 4,009,361 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LeawoodKsMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 226,480 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LeawoodKsMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2011 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Salt Lake City, UT [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 4,948,724 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SaltLakeCityUtMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 0 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SaltLakeCityUtMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 6,810,104 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SaltLakeCityUtMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | (44,417)us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SaltLakeCityUtMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 0 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SaltLakeCityUtMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 6,765,687 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SaltLakeCityUtMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 6,765,687 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SaltLakeCityUtMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 542,896 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SaltLakeCityUtMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2011 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Burton, MI [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BurtonMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 80,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BurtonMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 0 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BurtonMiMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BurtonMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 80,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BurtonMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 0 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BurtonMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 80,000 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BurtonMiMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 0 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BurtonMiMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2011 |  |  |
Macomb Township, MI 2 [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 1,793,000 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MacombTownshipMi2Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 1,605,134 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MacombTownshipMi2Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 0 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MacombTownshipMi2Member |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MacombTownshipMi2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 1,605,134 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MacombTownshipMi2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 0 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MacombTownshipMi2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,605,134 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MacombTownshipMi2Member |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 0 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MacombTownshipMi2Member |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2012 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Madison, AL [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 1,552,000 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MadisonAlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 675,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MadisonAlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,317,927 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MadisonAlMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MadisonAlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 675,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MadisonAlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,317,927 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MadisonAlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,992,927 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MadisonAlMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 98,844 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MadisonAlMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2012 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Walker, MI [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 887,000 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WalkerMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 219,200 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WalkerMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,024,738 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WalkerMiMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WalkerMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 219,200 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WalkerMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,024,738 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WalkerMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,243,938 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WalkerMiMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 70,448 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WalkerMiMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2012 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Portland, OR [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PortlandOrMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 7,969,403 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PortlandOrMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 0 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PortlandOrMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 161 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PortlandOrMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 7,969,564 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PortlandOrMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 0 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PortlandOrMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 7,969,564 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PortlandOrMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 0 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PortlandOrMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2012 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Cochran, GA [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CochranGaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 365,714 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CochranGaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 2,053,726 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CochranGaMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CochranGaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 365,714 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CochranGaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 2,053,726 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CochranGaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 2,419,440 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CochranGaMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 128,358 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CochranGaMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2012 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Baton Rouge, LA [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 1,073,217 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BatonRougeLaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 0 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BatonRougeLaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,188,322 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BatonRougeLaMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BatonRougeLaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 0 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BatonRougeLaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,188,322 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BatonRougeLaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,188,322 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BatonRougeLaMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 76,746 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BatonRougeLaMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2012 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Southfield, MI 2 [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 1,483,000 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SouthfieldMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 1,178,215 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SouthfieldMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 0 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SouthfieldMiMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SouthfieldMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 1,178,215 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SouthfieldMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 0 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SouthfieldMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,178,215 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SouthfieldMiMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 0 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SouthfieldMiMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2012 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Clifton Heights, PA [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 3,898,994 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CliftonHeightsPaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 2,543,941 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CliftonHeightsPaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 3,038,561 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CliftonHeightsPaMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CliftonHeightsPaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 2,543,941 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CliftonHeightsPaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 3,038,561 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CliftonHeightsPaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 5,582,502 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CliftonHeightsPaMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 186,554 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CliftonHeightsPaMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2012 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Newark, DE [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 2,492,444 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NewarkDeMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 2,117,547 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NewarkDeMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 4,777,516 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NewarkDeMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NewarkDeMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 2,117,547 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NewarkDeMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 4,777,516 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NewarkDeMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 6,895,063 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NewarkDeMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 293,318 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NewarkDeMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2012 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Vineland, NJ [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 2,188,562 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_VinelandNjMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 4,102,710 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_VinelandNjMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,501,854 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_VinelandNjMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_VinelandNjMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 4,102,710 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_VinelandNjMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,501,854 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_VinelandNjMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 5,604,564 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_VinelandNjMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 92,792 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_VinelandNjMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2012 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Fort Mill, SC [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FortMillScMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 750,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FortMillScMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,187,380 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FortMillScMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FortMillScMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 750,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FortMillScMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,187,380 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FortMillScMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,937,380 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FortMillScMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 71,738 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FortMillScMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2012 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Spartanburg, SC [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SpartanburgScMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 250,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SpartanburgScMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 765,714 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SpartanburgScMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SpartanburgScMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 250,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SpartanburgScMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 765,714 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SpartanburgScMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,015,714 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SpartanburgScMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 45,464 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SpartanburgScMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2012 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Springfield, IL [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SpringfieldIlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 302,520 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SpringfieldIlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 653,654 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SpringfieldIlMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SpringfieldIlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 302,520 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SpringfieldIlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 653,654 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SpringfieldIlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 956,174 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SpringfieldIlMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 38,130 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SpringfieldIlMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2012 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Jacksonville, NC [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JacksonvilleNcMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 676,930 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JacksonvilleNcMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,482,748 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JacksonvilleNcMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JacksonvilleNcMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 676,930 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JacksonvilleNcMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,482,748 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JacksonvilleNcMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 2,159,678 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JacksonvilleNcMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 86,494 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JacksonvilleNcMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2012 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Morrow, GA [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MorrowGaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 525,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MorrowGaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,383,489 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MorrowGaMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | (99,850)us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MorrowGaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 525,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MorrowGaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,283,639 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MorrowGaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,808,639 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MorrowGaMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 72,829 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MorrowGaMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2012 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Charlotte, NC [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CharlotteNcMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 1,822,900 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CharlotteNcMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 3,531,275 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CharlotteNcMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | (572,344)us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CharlotteNcMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 1,822,900 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CharlotteNcMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 2,958,931 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CharlotteNcMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 4,781,831 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CharlotteNcMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 162,660 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CharlotteNcMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2012 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Lyons, GA [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LyonsGaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 121,627 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LyonsGaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 2,155,635 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LyonsGaMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | (126,199)us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LyonsGaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 121,627 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LyonsGaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 2,029,436 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LyonsGaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 2,151,063 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LyonsGaMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 105,963 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LyonsGaMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2012 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Fuquay-Varina, NC [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FuquayvarinaNcMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 2,042,225 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FuquayvarinaNcMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,763,768 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FuquayvarinaNcMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | (255,778)us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FuquayvarinaNcMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 2,042,225 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FuquayvarinaNcMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,507,990 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FuquayvarinaNcMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 3,550,215 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FuquayvarinaNcMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 79,074 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FuquayvarinaNcMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2012 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Minneapolis, MN [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MinneapolisMnMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 1,088,015 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MinneapolisMnMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 345,958 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MinneapolisMnMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | (54,430)us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MinneapolisMnMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 826,635 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MinneapolisMnMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 552,908 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MinneapolisMnMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,379,543 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MinneapolisMnMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 28,366 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MinneapolisMnMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2012 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Lake Zurich, IL [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LakeZurichIlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 780,974 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LakeZurichIlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 7,909,277 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LakeZurichIlMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 28,174 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LakeZurichIlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 780,974 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LakeZurichIlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 7,937,451 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LakeZurichIlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 8,718,425 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LakeZurichIlMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 405,111 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LakeZurichIlMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2012 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Lebanon, VA [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LebanonVaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 300,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LebanonVaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 612,582 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LebanonVaMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 16,363 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LebanonVaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 300,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LebanonVaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 628,945 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LebanonVaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 928,945 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LebanonVaMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 31,447 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LebanonVaMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2012 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Harlingen, TX [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_HarlingenTxMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 430,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_HarlingenTxMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,614,378 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_HarlingenTxMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 12,854 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_HarlingenTxMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 430,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_HarlingenTxMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,627,232 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_HarlingenTxMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 2,057,232 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_HarlingenTxMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 81,362 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_HarlingenTxMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2012 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Wichita, TX [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WichitaTxMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 340,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WichitaTxMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,530,971 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WichitaTxMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 12,854 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WichitaTxMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 340,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WichitaTxMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,543,825 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WichitaTxMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,883,825 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WichitaTxMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 77,191 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WichitaTxMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2012 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Pensacola, FL 1 [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PensacolaFl1Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 650,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PensacolaFl1Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,165,415 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PensacolaFl1Member |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 12,854 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PensacolaFl1Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 650,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PensacolaFl1Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,178,269 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PensacolaFl1Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,828,269 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PensacolaFl1Member |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 58,913 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PensacolaFl1Member |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2012 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Pensacola, FL 2 [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PensacolaFl2Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 400,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PensacolaFl2Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,507,583 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PensacolaFl2Member |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 12,854 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PensacolaFl2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 400,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PensacolaFl2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,520,437 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PensacolaFl2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,920,437 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PensacolaFl2Member |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 76,022 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PensacolaFl2Member |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2012 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Venice, FL [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_VeniceFlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 1,300,196 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_VeniceFlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 0 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_VeniceFlMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 4,891 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_VeniceFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 1,305,087 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_VeniceFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 0 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_VeniceFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,305,087 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_VeniceFlMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 0 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_VeniceFlMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2012 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
St. Joseph, MO [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_StJosephMoMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 377,620 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_StJosephMoMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 7,639,521 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_StJosephMoMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_StJosephMoMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 377,620 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_StJosephMoMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 7,639,521 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_StJosephMoMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 8,017,141 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_StJosephMoMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 366,060 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_StJosephMoMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2013 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Statham, GA [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_StathamGaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 191,919 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_StathamGaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 3,851,073 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_StathamGaMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_StathamGaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 191,919 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_StathamGaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 3,851,073 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_StathamGaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 4,042,992 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_StathamGaMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 184,531 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_StathamGaMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2013 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
North Las Vegas, NV [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NorthLasVegasNvMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 214,552 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NorthLasVegasNvMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 717,435 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NorthLasVegasNvMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NorthLasVegasNvMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 214,552 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NorthLasVegasNvMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 717,435 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NorthLasVegasNvMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 931,987 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NorthLasVegasNvMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 33,630 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NorthLasVegasNvMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2013 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Memphis, TN [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MemphisTnMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 322,520 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MemphisTnMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 748,890 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MemphisTnMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MemphisTnMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 322,520 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MemphisTnMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 748,890 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MemphisTnMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,071,410 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MemphisTnMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 34,324 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MemphisTnMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2013 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Rancho Cordova, CA 2 [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RanchoCordovaCa2Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 3,889,612 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RanchoCordovaCa2Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 3,232,662 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RanchoCordovaCa2Member |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 282,130 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RanchoCordovaCa2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 3,889,612 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RanchoCordovaCa2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 3,514,792 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RanchoCordovaCa2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 7,404,404 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RanchoCordovaCa2Member |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 148,482 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RanchoCordovaCa2Member |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2013 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Kissimmee, FL [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_KissimmeeFlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 1,453,500 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_KissimmeeFlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 971,683 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_KissimmeeFlMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_KissimmeeFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 1,453,500 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_KissimmeeFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 971,683 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_KissimmeeFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 2,425,183 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_KissimmeeFlMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 42,511 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_KissimmeeFlMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2013 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Pinellas Park, FL [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PinellasParkFlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 2,625,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PinellasParkFlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 874,542 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PinellasParkFlMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 3,965 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PinellasParkFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 2,625,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PinellasParkFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 878,507 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PinellasParkFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 3,503,507 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PinellasParkFlMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 34,716 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PinellasParkFlMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2013 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Manchester, CT [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ManchesterCtMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 397,800 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ManchesterCtMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 325,705 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ManchesterCtMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ManchesterCtMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 397,800 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ManchesterCtMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 325,705 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ManchesterCtMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 723,505 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ManchesterCtMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 13,571 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ManchesterCtMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2013 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Rapid City, SD [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RapidCitySdMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 1,017,800 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RapidCitySdMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 2,348,032 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RapidCitySdMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RapidCitySdMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 1,017,800 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RapidCitySdMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 2,348,032 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RapidCitySdMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 3,365,832 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RapidCitySdMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 95,389 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RapidCitySdMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2013 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Chicago, IL [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ChicagoIlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 272,222 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ChicagoIlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 649,063 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ChicagoIlMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ChicagoIlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 272,222 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ChicagoIlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 649,063 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ChicagoIlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 921,285 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ChicagoIlMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 25,692 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ChicagoIlMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2013 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Brooklyn, OH [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BrooklynOhMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 3,643,700 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BrooklynOhMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 15,079,714 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BrooklynOhMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BrooklynOhMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 3,643,700 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BrooklynOhMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 15,079,714 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BrooklynOhMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 18,723,414 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BrooklynOhMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 565,489 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BrooklynOhMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2013 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Madisonville, TX [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MadisonvilleTxMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 96,680 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MadisonvilleTxMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,087,642 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MadisonvilleTxMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MadisonvilleTxMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 96,680 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MadisonvilleTxMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,087,642 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MadisonvilleTxMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,184,322 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MadisonvilleTxMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 40,787 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MadisonvilleTxMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2013 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Baton Rouge, LA 2 [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BatonRougeLa2Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 271,400 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BatonRougeLa2Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,086,434 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BatonRougeLa2Member |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BatonRougeLa2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 271,400 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BatonRougeLa2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,086,434 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BatonRougeLa2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,357,834 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BatonRougeLa2Member |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 38,478 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BatonRougeLa2Member |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2013 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Forest, MS [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ForestMsMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 0 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ForestMsMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,298,176 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ForestMsMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ForestMsMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 0 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ForestMsMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,298,176 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ForestMsMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,298,176 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ForestMsMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 45,977 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ForestMsMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2013 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Sun Valley, NV [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SunValleyNvMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 308,495 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SunValleyNvMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,373,336 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SunValleyNvMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 2,819 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SunValleyNvMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 308,495 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SunValleyNvMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,376,155 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SunValleyNvMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,684,650 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SunValleyNvMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 45,848 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SunValleyNvMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2013 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Rochester, NY [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RochesterNyMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 2,500,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RochesterNyMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 7,398,639 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RochesterNyMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RochesterNyMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 2,500,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RochesterNyMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 7,398,639 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RochesterNyMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 9,898,639 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RochesterNyMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 238,914 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RochesterNyMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2013 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Allentown, PA [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AllentownPaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 2,525,051 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AllentownPaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 7,896,613 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AllentownPaMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AllentownPaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 2,525,051 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AllentownPaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 7,896,613 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AllentownPaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 10,421,664 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AllentownPaMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 254,995 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AllentownPaMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2013 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Casselberry, FL [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CasselberryFlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 1,804,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CasselberryFlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 793,101 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CasselberryFlMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CasselberryFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 1,804,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CasselberryFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 793,101 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CasselberryFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 2,597,101 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CasselberryFlMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 28,089 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CasselberryFlMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2013 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Berwyn, IL [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BerwynIlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 186,791 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BerwynIlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 933,959 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BerwynIlMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 5,400 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BerwynIlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 186,791 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BerwynIlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 939,359 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BerwynIlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,126,150 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BerwynIlMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 25,430 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BerwynIlMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2013 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Grand Forks, ND [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GrandForksNdMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 1,502,609 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GrandForksNdMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 2,301,337 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GrandForksNdMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 1,801,028 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GrandForksNdMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 1,502,609 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GrandForksNdMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 4,102,365 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GrandForksNdMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 5,604,974 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GrandForksNdMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 112,148 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GrandForksNdMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2013 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Ann Arbor, MI 2 [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AnnArborMi2Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 3,000,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AnnArborMi2Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 4,595,757 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AnnArborMi2Member |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 276,163 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AnnArborMi2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 3,000,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AnnArborMi2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 4,871,920 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AnnArborMi2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 7,871,920 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AnnArborMi2Member |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 131,372 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AnnArborMi2Member |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2013 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Joplin, MO [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JoplinMoMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 1,208,225 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JoplinMoMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,160,843 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JoplinMoMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JoplinMoMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 1,208,225 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JoplinMoMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,160,843 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JoplinMoMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 2,369,068 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JoplinMoMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 33,858 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JoplinMoMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2013 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Red Bay, AL [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RedBayAlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 38,981 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RedBayAlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 2,528,437 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RedBayAlMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RedBayAlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 38,981 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RedBayAlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 2,528,437 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RedBayAlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 2,567,418 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RedBayAlMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 10,535 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RedBayAlMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Birmingham, AL [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BirminghamAlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 230,106 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BirminghamAlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 231,313 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BirminghamAlMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BirminghamAlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 230,106 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BirminghamAlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 231,313 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BirminghamAlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 461,419 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BirminghamAlMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 482 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BirminghamAlMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Birmingham, AL 2 [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BirminghamAl2Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 245,234 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BirminghamAl2Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 251,339 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BirminghamAl2Member |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BirminghamAl2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 245,234 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BirminghamAl2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 251,339 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BirminghamAl2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 496,573 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BirminghamAl2Member |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 524 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BirminghamAl2Member |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Birmingham, AL 3 [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BirminghamAl3Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 98,271 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BirminghamAl3Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 179,824 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BirminghamAl3Member |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BirminghamAl3Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 98,271 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BirminghamAl3Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 179,824 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BirminghamAl3Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 278,095 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BirminghamAl3Member |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 375 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BirminghamAl3Member |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Birmingham, AL 4 [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BirminghamAl4Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 235,641 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BirminghamAl4Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 127,477 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BirminghamAl4Member |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BirminghamAl4Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 235,641 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BirminghamAl4Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 127,477 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BirminghamAl4Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 363,118 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BirminghamAl4Member |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 266 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BirminghamAl4Member |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Montgomery, AL [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MontgomeryAlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 325,389 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MontgomeryAlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 217,850 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MontgomeryAlMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MontgomeryAlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 325,389 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MontgomeryAlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 217,850 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MontgomeryAlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 543,239 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MontgomeryAlMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 454 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MontgomeryAlMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Littleton, CO [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 5,595,327 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LittletonCoMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 819,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LittletonCoMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 8,756,266 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LittletonCoMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LittletonCoMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 819,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LittletonCoMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 8,756,266 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LittletonCoMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 9,575,266 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LittletonCoMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 54,727 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LittletonCoMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
St Petersburg, FL [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_StPetersburgFlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 1,225,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_StPetersburgFlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,025,247 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_StPetersburgFlMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_StPetersburgFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 1,225,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_StPetersburgFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,025,247 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_StPetersburgFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 2,250,247 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_StPetersburgFlMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 19,223 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_StPetersburgFlMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
St Augustine, FL [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_StAugustineFlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 200,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_StAugustineFlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,523,230 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_StAugustineFlMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_StAugustineFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 200,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_StAugustineFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,523,230 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_StAugustineFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,723,230 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_StAugustineFlMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 9,520 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_StAugustineFlMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
East Palatka, FL [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_EastPalatkaFlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 730,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_EastPalatkaFlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 575,236 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_EastPalatkaFlMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_EastPalatkaFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 730,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_EastPalatkaFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 575,236 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_EastPalatkaFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,305,236 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_EastPalatkaFlMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 3,595 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_EastPalatkaFlMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Pensacola, FL [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PensacolaFlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 136,365 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PensacolaFlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 398,773 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PensacolaFlMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PensacolaFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 136,365 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PensacolaFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 398,773 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PensacolaFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 535,138 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PensacolaFlMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 831 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PensacolaFlMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Jacksonville, FL [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JacksonvilleFlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 297,066 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JacksonvilleFlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 312,818 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JacksonvilleFlMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JacksonvilleFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 297,066 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JacksonvilleFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 312,818 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JacksonvilleFlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 609,884 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JacksonvilleFlMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 0 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JacksonvilleFlMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Jacksonville, FL 2 [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JacksonvilleFl2Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 299,312 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JacksonvilleFl2Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 348,862 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JacksonvilleFl2Member |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JacksonvilleFl2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 299,312 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JacksonvilleFl2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 348,862 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JacksonvilleFl2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 648,174 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JacksonvilleFl2Member |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 0 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JacksonvilleFl2Member |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Fort Oglethorpe, GA [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FortOglethorpeGaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 1,842,240 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FortOglethorpeGaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 2,844,126 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FortOglethorpeGaMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FortOglethorpeGaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 1,842,240 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FortOglethorpeGaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 2,844,126 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FortOglethorpeGaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 4,686,366 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FortOglethorpeGaMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 65,178 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FortOglethorpeGaMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
New Lenox, IL 2 [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NewLenoxIl2Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 2,010,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NewLenoxIl2Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 6,206,252 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NewLenoxIl2Member |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NewLenoxIl2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 2,010,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NewLenoxIl2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 6,206,252 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NewLenoxIl2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 8,216,252 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NewLenoxIl2Member |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 34,234 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NewLenoxIl2Member |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Rockford, IL [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RockfordIlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 303,395 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RockfordIlMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 2,436,873 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RockfordIlMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RockfordIlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 303,395 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RockfordIlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 2,436,873 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RockfordIlMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 2,740,268 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RockfordIlMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 15,230 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RockfordIlMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Indianapolis, IN 2 [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_IndianapolisIn2Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 575,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_IndianapolisIn2Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,871,110 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_IndianapolisIn2Member |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_IndianapolisIn2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 575,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_IndianapolisIn2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,871,110 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_IndianapolisIn2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 2,446,110 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_IndianapolisIn2Member |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 35,083 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_IndianapolisIn2Member |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Terre Haute, IN [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_TerreHauteInMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 103,147 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_TerreHauteInMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 2,477,263 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_TerreHauteInMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_TerreHauteInMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 103,147 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_TerreHauteInMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 2,477,263 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_TerreHauteInMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 2,580,410 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_TerreHauteInMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 0 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_TerreHauteInMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Junction City, KS [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JunctionCityKsMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 78,271 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JunctionCityKsMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 2,504,294 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JunctionCityKsMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JunctionCityKsMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 78,271 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JunctionCityKsMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 2,504,294 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JunctionCityKsMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 2,582,565 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JunctionCityKsMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 0 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JunctionCityKsMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Baton Rouge, LA 3 [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BatonRougeLa3Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 226,919 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BatonRougeLa3Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 347,691 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BatonRougeLa3Member |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BatonRougeLa3Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 226,919 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BatonRougeLa3Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 347,691 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BatonRougeLa3Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 574,610 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BatonRougeLa3Member |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 724 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BatonRougeLa3Member |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Lincoln Park, MI [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LincolnParkMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 543,303 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LincolnParkMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,408,544 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LincolnParkMiMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LincolnParkMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 543,303 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LincolnParkMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,408,544 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LincolnParkMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,951,847 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LincolnParkMiMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 26,410 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LincolnParkMiMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Novi, MI [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NoviMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 1,803,857 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NoviMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,488,505 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NoviMiMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NoviMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 1,803,857 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NoviMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,488,505 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NoviMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 3,292,362 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NoviMiMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 0 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NoviMiMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Bloomfield Hills, MI [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BloomfieldHillsMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 1,340,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BloomfieldHillsMiMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 2,003,406 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BloomfieldHillsMiMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BloomfieldHillsMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 1,340,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BloomfieldHillsMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 2,003,406 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BloomfieldHillsMiMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 3,343,406 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BloomfieldHillsMiMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 6,966 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BloomfieldHillsMiMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Moreahead, MN [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MoreaheadMnMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 511,645 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MoreaheadMnMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 870,732 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MoreaheadMnMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MoreaheadMnMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 511,645 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MoreaheadMnMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 870,732 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MoreaheadMnMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,382,377 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MoreaheadMnMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 3,628 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MoreaheadMnMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Fergus Falls, MN [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FergusFallsMnMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 405,617 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FergusFallsMnMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 561,332 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FergusFallsMnMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FergusFallsMnMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 405,617 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FergusFallsMnMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 561,332 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FergusFallsMnMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 966,949 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FergusFallsMnMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 2,339 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FergusFallsMnMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Fergus Falls, MN 2 [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FergusFallsMn2Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 327,247 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FergusFallsMn2Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 655,973 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FergusFallsMn2Member |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FergusFallsMn2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 327,247 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FergusFallsMn2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 655,973 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FergusFallsMn2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 983,220 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FergusFallsMn2Member |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 2,733 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FergusFallsMn2Member |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Park Rapids, MN [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ParkRapidsMnMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 413,151 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ParkRapidsMnMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 706,884 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ParkRapidsMnMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ParkRapidsMnMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 413,151 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ParkRapidsMnMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 706,884 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ParkRapidsMnMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,120,035 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ParkRapidsMnMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 2,945 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ParkRapidsMnMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Jackson, MS [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JacksonMsMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 256,789 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JacksonMsMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 172,184 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JacksonMsMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JacksonMsMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 256,789 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JacksonMsMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 172,184 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JacksonMsMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 428,973 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JacksonMsMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 359 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JacksonMsMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Belton, MO [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BeltonMoMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 714,775 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BeltonMoMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 7,173,999 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BeltonMoMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BeltonMoMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 714,775 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BeltonMoMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 7,173,999 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BeltonMoMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 7,888,774 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BeltonMoMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 0 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BeltonMoMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Great Falls, MT [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GreatFallsMtMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 945,765 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GreatFallsMtMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 753,222 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GreatFallsMtMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GreatFallsMtMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 945,765 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GreatFallsMtMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 753,222 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GreatFallsMtMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,698,987 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GreatFallsMtMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 0 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GreatFallsMtMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Irvington, NJ [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_IrvingtonNjMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 315,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_IrvingtonNjMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,313,025 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_IrvingtonNjMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_IrvingtonNjMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 315,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_IrvingtonNjMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,313,025 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_IrvingtonNjMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,628,025 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_IrvingtonNjMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 24,619 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_IrvingtonNjMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
East Grand Forks, ND [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_EastGrandForksNdMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 313,454 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_EastGrandForksNdMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 914,676 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_EastGrandForksNdMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_EastGrandForksNdMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 313,454 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_EastGrandForksNdMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 914,676 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_EastGrandForksNdMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,228,130 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_EastGrandForksNdMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 3,811 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_EastGrandForksNdMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Fargo, ND [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FargoNdMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 513,505 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FargoNdMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,201,532 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FargoNdMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FargoNdMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 513,505 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FargoNdMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,201,532 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FargoNdMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,715,037 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FargoNdMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 5,006 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FargoNdMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Fargo, ND 2 [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FargoNd2Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 629,484 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FargoNd2Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 707,799 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FargoNd2Member |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FargoNd2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 629,484 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FargoNd2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 707,799 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FargoNd2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,337,283 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FargoNd2Member |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 2,949 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_FargoNd2Member |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Jamestown, ND [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JamestownNdMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 234,545 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JamestownNdMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,158,486 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JamestownNdMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JamestownNdMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 234,545 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JamestownNdMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,158,486 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JamestownNdMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,393,031 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JamestownNdMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 4,827 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_JamestownNdMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Grand Forks, ND 2 [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GrandForksNd2Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 540,658 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GrandForksNd2Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 813,776 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GrandForksNd2Member |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GrandForksNd2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 540,658 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GrandForksNd2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 813,776 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GrandForksNd2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,354,434 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GrandForksNd2Member |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 3,391 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GrandForksNd2Member |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Grand Forks, ND 3 [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GrandForksNd3Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 762,471 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GrandForksNd3Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 554,595 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GrandForksNd3Member |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GrandForksNd3Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 762,471 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GrandForksNd3Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 554,595 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GrandForksNd3Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,317,066 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GrandForksNd3Member |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 2,311 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GrandForksNd3Member |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Grand Forks, ND 4 [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GrandForksNd4Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 529,087 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GrandForksNd4Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 676,026 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GrandForksNd4Member |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GrandForksNd4Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 529,087 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GrandForksNd4Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 676,026 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GrandForksNd4Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,205,113 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GrandForksNd4Member |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 2,817 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GrandForksNd4Member |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Toledo, OH [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ToledoOhMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 500,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ToledoOhMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,372,363 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ToledoOhMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ToledoOhMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 500,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ToledoOhMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,372,363 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ToledoOhMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,872,363 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ToledoOhMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 25,732 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ToledoOhMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Toledo, OH 2 [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ToledoOh2Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 155,250 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ToledoOh2Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 762,500 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ToledoOh2Member |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ToledoOh2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 155,250 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ToledoOh2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 762,500 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ToledoOh2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 917,750 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ToledoOh2Member |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 7,943 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ToledoOh2Member |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Toledo, OH 3 [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ToledoOh3Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 213,750 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ToledoOh3Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 754,675 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ToledoOh3Member |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ToledoOh3Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 213,750 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ToledoOh3Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 754,675 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ToledoOh3Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 968,425 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ToledoOh3Member |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 7,861 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ToledoOh3Member |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Toledo, OH 4 [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ToledoOh4Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 168,750 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ToledoOh4Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 785,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ToledoOh4Member |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ToledoOh4Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 168,750 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ToledoOh4Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 785,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ToledoOh4Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 953,750 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ToledoOh4Member |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 8,177 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ToledoOh4Member |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Port Clinton, OH [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PortClintonOhMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 75,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PortClintonOhMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 721,100 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PortClintonOhMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PortClintonOhMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 75,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PortClintonOhMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 721,100 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PortClintonOhMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 796,100 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PortClintonOhMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 7,511 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_PortClintonOhMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Mansfield, OH [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MansfieldOhMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 306,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MansfieldOhMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 725,600 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MansfieldOhMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MansfieldOhMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 306,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MansfieldOhMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 725,600 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MansfieldOhMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,031,600 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MansfieldOhMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 7,558 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MansfieldOhMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Orville, OH [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_OrvilleOhMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 344,250 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_OrvilleOhMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 716,600 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_OrvilleOhMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_OrvilleOhMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 344,250 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_OrvilleOhMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 716,600 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_OrvilleOhMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,060,850 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_OrvilleOhMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 7,465 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_OrvilleOhMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Akron, OH [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AkronOhMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 427,750 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AkronOhMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 715,700 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AkronOhMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AkronOhMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 427,750 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AkronOhMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 715,700 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AkronOhMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,143,450 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AkronOhMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 7,455 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AkronOhMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Akron, OH 2 [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AkronOh2Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 696,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AkronOh2Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 845,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AkronOh2Member |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AkronOh2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 696,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AkronOh2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 845,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AkronOh2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,541,000 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AkronOh2Member |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 8,802 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AkronOh2Member |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Hubbard, OH [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_HubbardOhMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 204,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_HubbardOhMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 726,500 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_HubbardOhMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_HubbardOhMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 204,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_HubbardOhMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 726,500 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_HubbardOhMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 930,500 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_HubbardOhMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 7,568 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_HubbardOhMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Youngstown, OH [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_YoungstownOhMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 285,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_YoungstownOhMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 745,700 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_YoungstownOhMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_YoungstownOhMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 285,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_YoungstownOhMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 745,700 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_YoungstownOhMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,030,700 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_YoungstownOhMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 7,768 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_YoungstownOhMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Calcutta, OH [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CalcuttaOhMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 208,050 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CalcuttaOhMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 758,750 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CalcuttaOhMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CalcuttaOhMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 208,050 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CalcuttaOhMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 758,750 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CalcuttaOhMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 966,800 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CalcuttaOhMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 7,904 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_CalcuttaOhMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Columbus, OH [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ColumbusOhMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 0 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ColumbusOhMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,136,250 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ColumbusOhMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ColumbusOhMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 0 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ColumbusOhMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,136,250 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ColumbusOhMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,136,250 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ColumbusOhMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 9,469 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ColumbusOhMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Tulsa, OK [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_TulsaOkMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 459,148 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_TulsaOkMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 640,550 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_TulsaOkMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_TulsaOkMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 459,148 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_TulsaOkMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 640,550 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_TulsaOkMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,099,698 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_TulsaOkMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 13,345 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_TulsaOkMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Ligonier, PA [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LigonierPaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 330,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LigonierPaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 5,021,849 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LigonierPaMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LigonierPaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 330,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LigonierPaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 5,021,849 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LigonierPaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 5,351,849 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LigonierPaMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 52,311 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LigonierPaMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Clarion, PA [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ClarionPaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 121,200 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ClarionPaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 771,500 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ClarionPaMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ClarionPaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 121,200 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ClarionPaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 771,500 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ClarionPaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 892,700 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ClarionPaMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 8,036 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ClarionPaMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Mercer, PA [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MercerPaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 121,200 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MercerPaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 770,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MercerPaMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MercerPaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 121,200 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MercerPaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 770,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MercerPaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 891,200 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MercerPaMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 8,021 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MercerPaMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Limerick, PA [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LimerickPaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 369,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LimerickPaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 0 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LimerickPaMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LimerickPaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 369,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LimerickPaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 0 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LimerickPaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 369,000 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LimerickPaMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 0 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_LimerickPaMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Harrisbuarg, PA [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_HarrisbuargPaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 124,757 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_HarrisbuargPaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,446,773 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_HarrisbuargPaMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_HarrisbuargPaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 124,757 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_HarrisbuargPaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,446,773 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_HarrisbuargPaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,571,530 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_HarrisbuargPaMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 0 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_HarrisbuargPaMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Andreson, SC [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AndresonScMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 781,200 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AndresonScMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 4,441,535 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AndresonScMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AndresonScMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 781,200 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AndresonScMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 4,441,535 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AndresonScMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 5,222,735 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AndresonScMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 101,785 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AndresonScMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Easley, SC [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_EasleyScMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 332,275 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_EasleyScMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 268,612 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_EasleyScMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_EasleyScMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 332,275 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_EasleyScMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 268,612 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_EasleyScMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 600,887 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_EasleyScMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 560 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_EasleyScMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Spartanburg, SC 2 [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SpartanburgSc2Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 141,307 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SpartanburgSc2Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 446,706 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SpartanburgSc2Member |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SpartanburgSc2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 141,307 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SpartanburgSc2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 446,706 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SpartanburgSc2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 588,013 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SpartanburgSc2Member |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 931 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SpartanburgSc2Member |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Spartanburg, SC 3 [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SpartanburgSc3Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 94,770 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SpartanburgSc3Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 261,640 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SpartanburgSc3Member |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SpartanburgSc3Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 94,770 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SpartanburgSc3Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 261,640 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SpartanburgSc3Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 356,410 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SpartanburgSc3Member |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 545 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SpartanburgSc3Member |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Columbia, SC [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ColumbiaScMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 303,932 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ColumbiaScMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,221,964 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ColumbiaScMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ColumbiaScMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 303,932 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ColumbiaScMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,221,964 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ColumbiaScMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,525,896 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ColumbiaScMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 2,546 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ColumbiaScMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Alcoa, TN [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AlcoaTnMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 329,074 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AlcoaTnMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 270,719 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AlcoaTnMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AlcoaTnMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 329,074 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AlcoaTnMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 270,719 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AlcoaTnMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 599,793 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AlcoaTnMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 564 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AlcoaTnMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Knoxville, TN [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_KnoxvilleTnMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 214,077 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_KnoxvilleTnMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 286,037 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_KnoxvilleTnMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_KnoxvilleTnMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 214,077 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_KnoxvilleTnMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 286,037 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_KnoxvilleTnMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 500,114 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_KnoxvilleTnMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 596 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_KnoxvilleTnMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Red Bank, TN [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RedBankTnMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 229,100 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RedBankTnMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 302,146 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RedBankTnMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RedBankTnMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 229,100 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RedBankTnMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 302,146 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RedBankTnMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 531,246 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RedBankTnMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 629 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_RedBankTnMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
New Tazewell, TN [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NewTazewellTnMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 91,006 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NewTazewellTnMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 328,561 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NewTazewellTnMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NewTazewellTnMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 91,006 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NewTazewellTnMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 328,561 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NewTazewellTnMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 419,567 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NewTazewellTnMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 0 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_NewTazewellTnMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Maryville, TN [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MaryvilleTnMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 94,682 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MaryvilleTnMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,529,621 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MaryvilleTnMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MaryvilleTnMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 94,682 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MaryvilleTnMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,529,621 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MaryvilleTnMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,624,303 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MaryvilleTnMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 0 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MaryvilleTnMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Morristown, TN [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MorristownTnMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 46,404 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MorristownTnMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 801,506 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MorristownTnMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MorristownTnMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 46,404 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MorristownTnMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 801,506 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MorristownTnMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 847,910 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MorristownTnMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 0 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MorristownTnMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Clinton, TN [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ClintonTnMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 69,625 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ClintonTnMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,177,927 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ClintonTnMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ClintonTnMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 69,625 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ClintonTnMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,177,927 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ClintonTnMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,247,552 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ClintonTnMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 0 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ClintonTnMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Knoxville, TN 2 [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_KnoxvilleTn2Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 160,057 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_KnoxvilleTn2Member |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 2,265,025 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_KnoxvilleTn2Member |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_KnoxvilleTn2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 160,057 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_KnoxvilleTn2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 2,265,025 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_KnoxvilleTn2Member |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 2,425,082 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_KnoxvilleTn2Member |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 0 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_KnoxvilleTn2Member |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Sweetwater, TN [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SweetwaterTnMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 79,100 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SweetwaterTnMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,009,290 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SweetwaterTnMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SweetwaterTnMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 79,100 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SweetwaterTnMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,009,290 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SweetwaterTnMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,088,390 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SweetwaterTnMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 0 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_SweetwaterTnMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
McKinney, TX [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MckinneyTxMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 2,671,020 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MckinneyTxMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 6,785,815 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MckinneyTxMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MckinneyTxMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 2,671,020 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MckinneyTxMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 6,785,815 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MckinneyTxMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 9,456,835 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MckinneyTxMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 84,823 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MckinneyTxMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Forest Va [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ForestVaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 282,600 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ForestVaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 956,027 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ForestVaMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ForestVaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 282,600 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ForestVaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 956,027 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ForestVaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,238,627 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ForestVaMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 17,926 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ForestVaMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Waynesboro, VA [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WaynesboroVaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 292,086 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WaynesboroVaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 514,209 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WaynesboroVaMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WaynesboroVaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 292,086 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WaynesboroVaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 514,209 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WaynesboroVaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 806,295 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WaynesboroVaMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 1,071 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_WaynesboroVaMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Colonial Heights, VA [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ColonialHeightsVaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 547,692 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ColonialHeightsVaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,059,557 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ColonialHeightsVaMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ColonialHeightsVaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 547,692 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ColonialHeightsVaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,059,557 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ColonialHeightsVaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,607,249 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ColonialHeightsVaMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 2,207 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ColonialHeightsVaMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Chester, VA [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ChesterVaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 300,583 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ChesterVaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 794,417 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ChesterVaMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ChesterVaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 300,583 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ChesterVaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 794,417 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ChesterVaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,095,000 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ChesterVaMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 1,655 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_ChesterVaMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Midlothian, VA [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MidlothianVaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 232,337 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MidlothianVaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 802,602 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MidlothianVaMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MidlothianVaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 232,337 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MidlothianVaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 802,602 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MidlothianVaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,034,939 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MidlothianVaMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 1,672 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MidlothianVaMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Ashland, VA [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AshlandVaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 426,396 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AshlandVaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 965,925 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AshlandVaMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AshlandVaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 426,396 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AshlandVaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 965,925 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AshlandVaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,392,321 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AshlandVaMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 2,012 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_AshlandVaMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Mecanicsville, VA [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MecanicsvilleVaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 219,496 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MecanicsvilleVaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 906,590 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MecanicsvilleVaMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MecanicsvilleVaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 219,496 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MecanicsvilleVaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 906,590 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MecanicsvilleVaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,126,086 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MecanicsvilleVaMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 1,889 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_MecanicsvilleVaMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Glen Allen, VA [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GlenAllenVaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 590,101 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GlenAllenVaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 1,129,495 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GlenAllenVaMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GlenAllenVaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 590,101 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GlenAllenVaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 1,129,495 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GlenAllenVaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 1,719,596 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GlenAllenVaMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 2,353 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_GlenAllenVaMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Burlington, WA [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Real Estate and Accumulated Depreciation, Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BurlingtonWaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Land | 610,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BurlingtonWaMember |  |  |
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements | 3,647,279 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BurlingtonWaMember |  |  |
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition | 0 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BurlingtonWaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land | 610,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BurlingtonWaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements | 3,647,279 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BurlingtonWaMember |  |  |
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total | 4,257,279 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BurlingtonWaMember |  |  |
Real Estate and Accumulated Depreciation, Accumulated Depreciation | 8,869 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = adc_BurlingtonWaMember |  |  |
Real Estate and Accumulated Depreciation, Date of Acquisition | 2014 |  |  |
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed | 40 years |  |  |
Wausau, WI [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
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Sub Total [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
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