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CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Cash Flows from Operating Activities |  |  |
Net income | $ 18,913,009 us-gaap_ProfitLoss | $ 20,189,611 us-gaap_ProfitLoss | $ 18,603,594 us-gaap_ProfitLoss
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Depreciation | 8,486,178 us-gaap_Depreciation | 6,996,741 us-gaap_Depreciation | 5,792,281 us-gaap_Depreciation
Amortization | 3,567,409 us-gaap_AdjustmentForAmortization | 2,483,217 us-gaap_AdjustmentForAmortization | 1,712,530 us-gaap_AdjustmentForAmortization
Stock-based compensation | 1,986,835 us-gaap_ShareBasedCompensation | 1,812,532 us-gaap_ShareBasedCompensation | 1,657,209 us-gaap_ShareBasedCompensation
Impairment charge | 3,020,000 us-gaap_ImpairmentOfRealEstate | 450,000 us-gaap_ImpairmentOfRealEstate | 0 us-gaap_ImpairmentOfRealEstate
(Gain) loss on sale of assets | 404,996 us-gaap_GainLossOnDispositionOfAssets1 | (946,347)us-gaap_GainLossOnDispositionOfAssets1 | (2,097,105)us-gaap_GainLossOnDispositionOfAssets1
Increase in accounts receivable | (1,244,967)us-gaap_IncreaseDecreaseInAccountsReceivable | (1,102,713)us-gaap_IncreaseDecreaseInAccountsReceivable | (1,358,374)us-gaap_IncreaseDecreaseInAccountsReceivable
(Increase) decrease in other assets | 346,131 us-gaap_IncreaseDecreaseInOtherOperatingAssets | (780,069)us-gaap_IncreaseDecreaseInOtherOperatingAssets | (864,294)us-gaap_IncreaseDecreaseInOtherOperatingAssets
(Decrease) increase in accounts payable | (167,263)us-gaap_IncreaseDecreaseInAccountsPayable | 838,515 us-gaap_IncreaseDecreaseInAccountsPayable | (1,358,147)us-gaap_IncreaseDecreaseInAccountsPayable
Decrease in deferred revenue | (463,380)us-gaap_IncreaseDecreaseInDeferredRevenue | (463,380)us-gaap_IncreaseDecreaseInDeferredRevenue | (463,380)us-gaap_IncreaseDecreaseInDeferredRevenue
(Decrease) increase in accrued interest | 250,597 us-gaap_IncreaseDecreaseInInterestPayableNet | 135,446 us-gaap_IncreaseDecreaseInInterestPayableNet | (398,779)us-gaap_IncreaseDecreaseInInterestPayableNet
Decrease in tenant deposits | (4,491)us-gaap_IncreaseDecreaseInSecurityDeposits | (23,814)us-gaap_IncreaseDecreaseInSecurityDeposits | (19,814)us-gaap_IncreaseDecreaseInSecurityDeposits
Net Cash Provided by Operating Activities | 35,095,054 us-gaap_NetCashProvidedByUsedInOperatingActivities | 29,589,739 us-gaap_NetCashProvidedByUsedInOperatingActivities | 21,205,721 us-gaap_NetCashProvidedByUsedInOperatingActivities
Cash Flows from Investing Activities |  |  |
Acquisition of real estate investments | (143,272,607)us-gaap_PaymentsToAcquireRealEstate | (75,920,083)us-gaap_PaymentsToAcquireRealEstate | (64,166,390)us-gaap_PaymentsToAcquireRealEstate
Development of real estate investments and other (including capitalized interest of $263,472 in 2014, $566,793 in 2013, and $149,054 in 2012) | (16,526,566)us-gaap_PaymentsToDevelopRealEstateAssets | (14,619,386)us-gaap_PaymentsToDevelopRealEstateAssets | (20,349,688)us-gaap_PaymentsToDevelopRealEstateAssets
Payment of leasing costs | (354,336)us-gaap_PaymentsForLeasingCosts | (183,310)us-gaap_PaymentsForLeasingCosts | (55,960)us-gaap_PaymentsForLeasingCosts
Net proceeds from sale of assets | 12,455,673 us-gaap_ProceedsFromSaleOfProductiveAssets | 5,462,280 us-gaap_ProceedsFromSaleOfProductiveAssets | 15,315,728 us-gaap_ProceedsFromSaleOfProductiveAssets
Net Cash Used In Investing Activities | (147,697,836)us-gaap_NetCashProvidedByUsedInInvestingActivities | (85,260,499)us-gaap_NetCashProvidedByUsedInInvestingActivities | (69,256,310)us-gaap_NetCashProvidedByUsedInInvestingActivities
Cash Flows from Financing Activities |  |  |
Proceeds from common stock offering, net | 73,302,116 us-gaap_ProceedsFromIssuanceOfCommonStock | 93,393,056 us-gaap_ProceedsFromIssuanceOfCommonStock | 35,042,235 us-gaap_ProceedsFromIssuanceOfCommonStock
Unsecured revolving credit facility borrowings | 148,622,976 us-gaap_ProceedsFromLinesOfCredit | 106,189,924 us-gaap_ProceedsFromLinesOfCredit | 101,220,945 us-gaap_ProceedsFromLinesOfCredit
Unsecured revolving credit facility repayments | (143,122,976)us-gaap_RepaymentsOfLinesOfCredit | (140,219,929)us-gaap_RepaymentsOfLinesOfCredit | (114,134,838)us-gaap_RepaymentsOfLinesOfCredit
Mortgage notes payable proceeds | 0 us-gaap_ProceedsFromIssuanceOfSecuredDebt | 0 us-gaap_ProceedsFromIssuanceOfSecuredDebt | 48,640,000 us-gaap_ProceedsFromIssuanceOfSecuredDebt
Payments of mortgage notes payable | (12,766,704)us-gaap_RepaymentsOfSecuredDebt | (3,478,383)us-gaap_RepaymentsOfSecuredDebt | (3,164,654)us-gaap_RepaymentsOfSecuredDebt
Term loan payable proceeds | 65,000,000 us-gaap_ProceedsFromIssuanceOfUnsecuredDebt | 35,000,000 us-gaap_ProceedsFromIssuanceOfUnsecuredDebt | 0 us-gaap_ProceedsFromIssuanceOfUnsecuredDebt
Dividends paid | (25,402,637)us-gaap_PaymentsOfDividends | (20,859,476)us-gaap_PaymentsOfDividends | (17,663,808)us-gaap_PaymentsOfDividends
Limited partners' distributions paid | (590,951)us-gaap_PaymentsOfCapitalDistribution | (566,619)us-gaap_PaymentsOfCapitalDistribution | (556,188)us-gaap_PaymentsOfCapitalDistribution
Repayments of payables for capital expenditures | (144,074)us-gaap_RepaymentsOfOtherDebt | (122,080)us-gaap_RepaymentsOfOtherDebt | (424,321)us-gaap_RepaymentsOfOtherDebt
Payments for financing costs | (1,432,391)us-gaap_PaymentsOfFinancingCosts | (398,879)us-gaap_PaymentsOfFinancingCosts | (1,641,418)us-gaap_PaymentsOfFinancingCosts
Net Cash Provided by Financing Activities | 103,465,359 us-gaap_NetCashProvidedByUsedInFinancingActivities | 68,937,614 us-gaap_NetCashProvidedByUsedInFinancingActivities | 47,317,953 us-gaap_NetCashProvidedByUsedInFinancingActivities
Net Increase (Decrease) in Cash and Cash Equivalents | (9,137,423)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease | 13,266,854 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease | (732,636)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
Cash and Cash Equivalents, beginning of period | 14,536,881 us-gaap_CashAndCashEquivalentsAtCarryingValue | 1,270,027 us-gaap_CashAndCashEquivalentsAtCarryingValue | 2,002,663 us-gaap_CashAndCashEquivalentsAtCarryingValue
Cash and Cash Equivalents, end of period | 5,399,458 us-gaap_CashAndCashEquivalentsAtCarryingValue | 14,536,881 us-gaap_CashAndCashEquivalentsAtCarryingValue | 1,270,027 us-gaap_CashAndCashEquivalentsAtCarryingValue
Supplemental Disclosure of Cash Flow Information |  |  |
Cash paid for interest (net of amounts capitalized) | 7,824,594 us-gaap_InterestPaidNet | 6,149,649 us-gaap_InterestPaidNet | 4,722,042 us-gaap_InterestPaidNet
Cash paid (refunded) for income tax | (355)us-gaap_IncomeTaxesPaidNet | (21,543)us-gaap_IncomeTaxesPaidNet | 318,289 us-gaap_IncomeTaxesPaidNet
Supplemental Disclosure of Non-Cash Investing and Financing Activities |  |  |
Shares issued under equity incentive plans | 2,390,245 us-gaap_StockIssued1 | 2,401,688 us-gaap_StockIssued1 | 2,175,831 us-gaap_StockIssued1
Dividends and limited partners' distributions declared and unpaid | 8,048,404 adc_DividendsDeclaredAndUnpaid | 6,243,933 adc_DividendsDeclaredAndUnpaid | 4,710,446 adc_DividendsDeclaredAndUnpaid
Real estate acquisitions financed with debt assumption | $ 5,631,183 adc_RealEstateAcquisitionsFinancedWithDebtAssumption | $ 0 adc_RealEstateAcquisitionsFinancedWithDebtAssumption | $ 18,220,528 adc_RealEstateAcquisitionsFinancedWithDebtAssumption

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- Definition The cash outflow for loan and debt issuance costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 + Details
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- Definition The cash outflow from the acquisition of a piece of land, anything permanently fixed to it, including buildings, structures on it and so forth; includes real estate intended to generate income for the owner; excludes real estate acquired for use by the owner. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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- Definition Payments to develop real estate assets is the process of adding improvements on or to a parcel of land. Such improvements may include drainage, utilities, subdividing, access, buildings, and any combination of these elements; and are generally classified as cash flow from investing activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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- Definition The cash inflow from the additional capital contribution to the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 + Details
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- Definition The cash inflow from amounts received from issuance of long-term debt that is wholly or partially secured by collateral. Excludes proceeds from tax exempt secured debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 + Details
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- Definition The cash inflow from the issuance of long-term debt that is not secured by collateral. Excludes proceeds from tax exempt unsecured debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 + Details
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- Definition Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(f)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph f -Article 4 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 + Details
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- Definition The cash inflow from the sale of property, plant and equipment (capital expenditures), software, and other intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585 + Details
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- Definition The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4K -URI http://asc.fasb.org/extlink&oid=35736750&loc=SL4591552-111686 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=7656940&loc=SL4569616-111683 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=18733093&loc=SL4573702-111684 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4J -URI http://asc.fasb.org/extlink&oid=35736750&loc=SL4591551-111686 + Details
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- Definition Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(f)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph f -Article 4 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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- Definition The cash outflow for the payment of other borrowing not otherwise defined in the taxonomy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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- Definition The cash outflow to repay long-term debt that is wholly or partially secured by collateral. Excludes repayments of tax exempt secured debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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- Definition The fair value of stock issued in noncash financing activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4313-108586 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 + Details
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