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Schedule III (Real Estate and Accumulated Depreciation) (Details) (USD $) | Dec. 31, 2014
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Real Estate And Accumulated Depreciation [Line Items] |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances | $ 132,408,000 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land | 47,682,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements | 170,415,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total | 229,308,000 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionImprovements
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements | 9,932,000 us-gaap_SECScheduleIIIRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionBuildingsAndImprovements
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land | 47,681,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements | 181,311,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
SEC Schedule III, Real Estate, Gross, Total | 228,992,000 us-gaap_RealEstateGrossAtCarryingValue
Real Estate Accumulated Depreciation | 26,540,000 us-gaap_RealEstateAccumulatedDepreciation
Mortgage Loans on Real Estate, Write-down or Reserve, Amount | 4,250,000 us-gaap_MortgageLoansOnRealEstateWritedownOrReserveAmount1
SEC Schedule III, Real Estate Investment Property, Net, Total | 198,197,000 us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
Industrial Office Properties [Member] |
Real Estate And Accumulated Depreciation [Line Items] |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances | 83,258,000 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land | 28,774,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements | 106,090,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total | 134,863,000 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements | 8,512,000 us-gaap_SECScheduleIIIRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land | 28,774,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements | 114,665,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember
SEC Schedule III, Real Estate, Gross, Total | 143,437,000 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember
Real Estate Accumulated Depreciation | 18,026,000 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember
Mortgage Loans on Real Estate, Write-down or Reserve, Amount | 3,950,000 us-gaap_MortgageLoansOnRealEstateWritedownOrReserveAmount1 / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember
SEC Schedule III, Real Estate Investment Property, Net, Total | 121,461,000 us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember
Industrial Office Properties [Member] | Havana Parker [Member] |
Real Estate And Accumulated Depreciation [Line Items] |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances | 2,500,000 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_HavanaParkerMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land | 1,023,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_HavanaParkerMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements | 4,806,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_HavanaParkerMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total | 5,829,000 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_HavanaParkerMember
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements | 2,454,000 us-gaap_SECScheduleIIIRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_HavanaParkerMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land | 1,023,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_HavanaParkerMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements | 7,260,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_HavanaParkerMember
SEC Schedule III, Real Estate, Gross, Total | 8,282,000 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_HavanaParkerMember
Real Estate Accumulated Depreciation | 2,564,000 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_HavanaParkerMember
Mortgage Loans on Real Estate, Write-down or Reserve, Amount | 3,450,000 us-gaap_MortgageLoansOnRealEstateWritedownOrReserveAmount1 / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_HavanaParkerMember
SEC Schedule III, Real Estate Investment Property, Net, Total | 2,268,000 us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_HavanaParkerMember
Industrial Office Properties [Member] | Garden Gateway Plaza [Member] |
Real Estate And Accumulated Depreciation [Line Items] |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances | 6,964,000 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_GardenGatewayPlazaMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land | 3,035,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_GardenGatewayPlazaMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements | 12,091,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_GardenGatewayPlazaMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total | 15,126,000 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_GardenGatewayPlazaMember
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements | 1,240,000 us-gaap_SECScheduleIIIRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_GardenGatewayPlazaMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land | 3,035,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_GardenGatewayPlazaMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements | 13,331,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_GardenGatewayPlazaMember
SEC Schedule III, Real Estate, Gross, Total | 16,365,000 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_GardenGatewayPlazaMember
Real Estate Accumulated Depreciation | 4,245,000 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_GardenGatewayPlazaMember
SEC Schedule III, Real Estate Investment Property, Net, Total | 12,120,000 us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_GardenGatewayPlazaMember
Industrial Office Properties [Member] | Executive Office Park [Member] |
Real Estate And Accumulated Depreciation [Line Items] |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances | 4,380,000 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_ExecutiveOfficeParkMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land | 1,266,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_ExecutiveOfficeParkMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements | 8,815,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_ExecutiveOfficeParkMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total | 10,080,000 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_ExecutiveOfficeParkMember
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements | 252,000 us-gaap_SECScheduleIIIRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_ExecutiveOfficeParkMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land | 1,266,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_ExecutiveOfficeParkMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements | 9,066,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_ExecutiveOfficeParkMember
SEC Schedule III, Real Estate, Gross, Total | 10,332,000 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_ExecutiveOfficeParkMember
Real Estate Accumulated Depreciation | 2,059,000 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_ExecutiveOfficeParkMember
SEC Schedule III, Real Estate Investment Property, Net, Total | 8,274,000 us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_ExecutiveOfficeParkMember
Industrial Office Properties [Member] | Pacific Oaks Plaza [Member] |
Real Estate And Accumulated Depreciation [Line Items] |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances | 1,599,000 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_PacificOaksPlazaMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land | 980,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_PacificOaksPlazaMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements | 3,868,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_PacificOaksPlazaMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total | 4,848,000 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_PacificOaksPlazaMember
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements | 124,000 us-gaap_SECScheduleIIIRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_PacificOaksPlazaMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land | 980,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_PacificOaksPlazaMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements | 3,993,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_PacificOaksPlazaMember
SEC Schedule III, Real Estate, Gross, Total | 4,973,000 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_PacificOaksPlazaMember
Real Estate Accumulated Depreciation | 682,000 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_PacificOaksPlazaMember
SEC Schedule III, Real Estate Investment Property, Net, Total | 4,291,000 us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_PacificOaksPlazaMember
Industrial Office Properties [Member] | Morena Office Center [Member] |
Real Estate And Accumulated Depreciation [Line Items] |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances | 2,352,000 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_MorenaOfficeCenterMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land | 1,333,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_MorenaOfficeCenterMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements | 5,203,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_MorenaOfficeCenterMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total | 6,536,000 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_MorenaOfficeCenterMember
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements | 688,000 us-gaap_SECScheduleIIIRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_MorenaOfficeCenterMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land | 1,333,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_MorenaOfficeCenterMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements | 5,891,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_MorenaOfficeCenterMember
SEC Schedule III, Real Estate, Gross, Total | 7,224,000 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_MorenaOfficeCenterMember
Real Estate Accumulated Depreciation | 1,263,000 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_MorenaOfficeCenterMember
Mortgage Loans on Real Estate, Write-down or Reserve, Amount | 500,000 us-gaap_MortgageLoansOnRealEstateWritedownOrReserveAmount1 / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_MorenaOfficeCenterMember
SEC Schedule III, Real Estate Investment Property, Net, Total | 5,461,000 us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_MorenaOfficeCenterMember
Industrial Office Properties [Member] | Genesis Plaza [Member] |
Real Estate And Accumulated Depreciation [Line Items] |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances | 4,492,000 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_GenesisPlazaMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land | 1,400,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_GenesisPlazaMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements | 8,600,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_GenesisPlazaMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total | 10,000,000 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_GenesisPlazaMember
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements | 663,000 us-gaap_SECScheduleIIIRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_GenesisPlazaMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land | 1,400,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_GenesisPlazaMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements | 9,263,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_GenesisPlazaMember
SEC Schedule III, Real Estate, Gross, Total | 10,663,000 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_GenesisPlazaMember
Real Estate Accumulated Depreciation | 2,050,000 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_GenesisPlazaMember
SEC Schedule III, Real Estate Investment Property, Net, Total | 8,613,000 us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_GenesisPlazaMember
Industrial Office Properties [Member] | Fargo Bank Building [Member] |
Real Estate And Accumulated Depreciation [Line Items] |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances | 10,993,000 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_FargoBankBuildingMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land | 832,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_FargoBankBuildingMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements | 8,743,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_FargoBankBuildingMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total | 9,575,000 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_FargoBankBuildingMember
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements | 1,971,000 us-gaap_SECScheduleIIIRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_FargoBankBuildingMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land | 832,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_FargoBankBuildingMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements | 10,714,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_FargoBankBuildingMember
SEC Schedule III, Real Estate, Gross, Total | 11,546,000 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_FargoBankBuildingMember
Real Estate Accumulated Depreciation | 1,519,000 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_FargoBankBuildingMember
SEC Schedule III, Real Estate Investment Property, Net, Total | 10,027,000 us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_FargoBankBuildingMember
Industrial Office Properties [Member] | Rangewood Medical Office Building [Member] |
Real Estate And Accumulated Depreciation [Line Items] |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances | 1,092,000 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_RangewoodMedicalOfficeBuildingMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land | 572,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_RangewoodMedicalOfficeBuildingMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements | 2,058,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_RangewoodMedicalOfficeBuildingMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total | 2,630,000 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_RangewoodMedicalOfficeBuildingMember
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements | 356,000 us-gaap_SECScheduleIIIRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_RangewoodMedicalOfficeBuildingMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land | 572,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_RangewoodMedicalOfficeBuildingMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements | 2,414,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_RangewoodMedicalOfficeBuildingMember
SEC Schedule III, Real Estate, Gross, Total | 2,986,000 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_RangewoodMedicalOfficeBuildingMember
Real Estate Accumulated Depreciation | 625,000 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_RangewoodMedicalOfficeBuildingMember
SEC Schedule III, Real Estate Investment Property, Net, Total | 2,361,000 us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_RangewoodMedicalOfficeBuildingMember
Industrial Office Properties [Member] | Shoreline Medical Building [Member] |
Real Estate And Accumulated Depreciation [Line Items] |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances | 3,847,000 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_ShorelineMedicalBuildingMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land | 1,820,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_ShorelineMedicalBuildingMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements | 4,530,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_ShorelineMedicalBuildingMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total | 6,350,000 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_ShorelineMedicalBuildingMember
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements | 0 us-gaap_SECScheduleIIIRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_ShorelineMedicalBuildingMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land | 1,820,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_ShorelineMedicalBuildingMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements | 4,530,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_ShorelineMedicalBuildingMember
SEC Schedule III, Real Estate, Gross, Total | 6,350,000 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_ShorelineMedicalBuildingMember
Real Estate Accumulated Depreciation | 356,000 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_ShorelineMedicalBuildingMember
SEC Schedule III, Real Estate Investment Property, Net, Total | 5,994,000 us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_ShorelineMedicalBuildingMember
Industrial Office Properties [Member] | Port of San Diego Complex [Member] |
Real Estate And Accumulated Depreciation [Line Items] |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances | 10,368,000 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_PortOfSanDiegoComplexMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land | 9,613,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_PortOfSanDiegoComplexMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements | 4,887,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_PortOfSanDiegoComplexMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total | 14,500,000 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_PortOfSanDiegoComplexMember
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements | 401,000 us-gaap_SECScheduleIIIRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_PortOfSanDiegoComplexMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land | 9,613,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_PortOfSanDiegoComplexMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements | 5,288,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_PortOfSanDiegoComplexMember
SEC Schedule III, Real Estate, Gross, Total | 14,901,000 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_PortOfSanDiegoComplexMember
Real Estate Accumulated Depreciation | 947,000 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_PortOfSanDiegoComplexMember
SEC Schedule III, Real Estate Investment Property, Net, Total | 13,954,000 us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_PortOfSanDiegoComplexMember
Industrial Office Properties [Member] | The Presidio [Member] |
Real Estate And Accumulated Depreciation [Line Items] |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances | 6,000,000 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_PresidioMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land | 1,325,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_PresidioMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements | 5,950,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_PresidioMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total | 7,275,000 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_PresidioMember
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements | 276,000 us-gaap_SECScheduleIIIRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_PresidioMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land | 1,325,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_PresidioMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements | 6,226,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_PresidioMember
SEC Schedule III, Real Estate, Gross, Total | 7,551,000 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_PresidioMember
Real Estate Accumulated Depreciation | 867,000 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_PresidioMember
SEC Schedule III, Real Estate Investment Property, Net, Total | 6,684,000 us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_PresidioMember
Industrial Office Properties [Member] | Bismarck Office [Member] |
Real Estate And Accumulated Depreciation [Line Items] |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances | 3,321,000 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_BismarckOfficeMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land | 413,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_BismarckOfficeMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements | 4,926,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_BismarckOfficeMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total | 5,339,000 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_BismarckOfficeMember
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements | 70,000 us-gaap_SECScheduleIIIRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_BismarckOfficeMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land | 413,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_BismarckOfficeMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements | 4,996,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_BismarckOfficeMember
SEC Schedule III, Real Estate, Gross, Total | 5,409,000 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_BismarckOfficeMember
Real Estate Accumulated Depreciation | 439,000 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_BismarckOfficeMember
SEC Schedule III, Real Estate Investment Property, Net, Total | 4,969,000 us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_BismarckOfficeMember
Industrial Office Properties [Member] | Union Terrace [Member] |
Real Estate And Accumulated Depreciation [Line Items] |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances | 6,600,000 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_UnionTerraceMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land | 1,717,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_UnionTerraceMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements | 7,708,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_UnionTerraceMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total | 9,425,000 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_UnionTerraceMember
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements | 17,000 us-gaap_SECScheduleIIIRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_UnionTerraceMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land | 1,717,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_UnionTerraceMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements | 7,725,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_UnionTerraceMember
SEC Schedule III, Real Estate, Gross, Total | 9,442,000 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_UnionTerraceMember
Real Estate Accumulated Depreciation | 410,000 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_UnionTerraceMember
SEC Schedule III, Real Estate Investment Property, Net, Total | 9,032,000 us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_UnionTerraceMember
Industrial Office Properties [Member] | Centennial Tech Center [Member] |
Real Estate And Accumulated Depreciation [Line Items] |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances | 10,250,000 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_CentennialTechCenterMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land | 2,025,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_CentennialTechCenterMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements | 13,475,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_CentennialTechCenterMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total | 15,500,000 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_CentennialTechCenterMember
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements | 0 us-gaap_SECScheduleIIIRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_CentennialTechCenterMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land | 2,025,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_CentennialTechCenterMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements | 13,515,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_CentennialTechCenterMember
SEC Schedule III, Real Estate, Gross, Total | 15,540,000 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_CentennialTechCenterMember
Real Estate Accumulated Depreciation | 0 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_CentennialTechCenterMember
SEC Schedule III, Real Estate Investment Property, Net, Total | 15,540,000 us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_CentennialTechCenterMember
Industrial Office Properties [Member] | Arapahoe Service Center [Member] |
Real Estate And Accumulated Depreciation [Line Items] |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances | 8,500,000 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_ArapahoeServiceCenterMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land | 1,420,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_ArapahoeServiceCenterMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements | 10,430,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_ArapahoeServiceCenterMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total | 11,850,000 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_ArapahoeServiceCenterMember
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements | 0 us-gaap_SECScheduleIIIRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_ArapahoeServiceCenterMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land | 1,420,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_ArapahoeServiceCenterMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements | 10,453,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_ArapahoeServiceCenterMember
SEC Schedule III, Real Estate, Gross, Total | 11,873,000 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_ArapahoeServiceCenterMember
Real Estate Accumulated Depreciation | 0 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_ArapahoeServiceCenterMember
SEC Schedule III, Real Estate Investment Property, Net, Total | 11,873,000 us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_IndustrialOfficePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_ArapahoeServiceCenterMember
Retail Properties [Member] |
Real Estate And Accumulated Depreciation [Line Items] |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances | 16,005,000 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land | 9,420,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements | 27,052,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total | 36,472,000 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements | 1,160,000 us-gaap_SECScheduleIIIRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land | 9,420,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements | 29,106,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember
SEC Schedule III, Real Estate, Gross, Total | 38,528,000 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember
Real Estate Accumulated Depreciation | 4,189,000 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember
Mortgage Loans on Real Estate, Write-down or Reserve, Amount | 300,000 us-gaap_MortgageLoansOnRealEstateWritedownOrReserveAmount1 / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember
SEC Schedule III, Real Estate Investment Property, Net, Total | 34,037,000 us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember
Retail Properties [Member] | World Plaza [Member] |
Real Estate And Accumulated Depreciation [Line Items] |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances | 0 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_WorldPlazaMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land | 1,698,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_WorldPlazaMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements | 6,232,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_WorldPlazaMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total | 7,930,000 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_WorldPlazaMember
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements | 627,000 us-gaap_SECScheduleIIIRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_WorldPlazaMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land | 1,698,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_WorldPlazaMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements | 6,858,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_WorldPlazaMember
SEC Schedule III, Real Estate, Gross, Total | 8,557,000 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_WorldPlazaMember
Real Estate Accumulated Depreciation | 1,723,000 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_WorldPlazaMember
SEC Schedule III, Real Estate Investment Property, Net, Total | 6,834,000 us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_WorldPlazaMember
Retail Properties [Member] | Regatta Square [Member] |
Real Estate And Accumulated Depreciation [Line Items] |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances | 1,215,000 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_RegattaSquareMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land | 811,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_RegattaSquareMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements | 1,369,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_RegattaSquareMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total | 2,180,000 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_RegattaSquareMember
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements | 71,000 us-gaap_SECScheduleIIIRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_RegattaSquareMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land | 811,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_RegattaSquareMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements | 1,440,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_RegattaSquareMember
SEC Schedule III, Real Estate, Gross, Total | 2,251,000 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_RegattaSquareMember
Real Estate Accumulated Depreciation | 353,000 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_RegattaSquareMember
SEC Schedule III, Real Estate Investment Property, Net, Total | 1,897,000 us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_RegattaSquareMember
Retail Properties [Member] | Waterman Plaza [Member] |
Real Estate And Accumulated Depreciation [Line Items] |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances | 3,368,000 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_WatermanPlazaMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land | 2,350,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_WatermanPlazaMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements | 4,814,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_WatermanPlazaMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total | 7,164,000 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_WatermanPlazaMember
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements | 62,000 us-gaap_SECScheduleIIIRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_WatermanPlazaMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land | 2,350,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_WatermanPlazaMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements | 4,875,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_WatermanPlazaMember
SEC Schedule III, Real Estate, Gross, Total | 7,226,000 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_WatermanPlazaMember
Real Estate Accumulated Depreciation | 930,000 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_WatermanPlazaMember
Mortgage Loans on Real Estate, Write-down or Reserve, Amount | 300,000 us-gaap_MortgageLoansOnRealEstateWritedownOrReserveAmount1 / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_WatermanPlazaMember
SEC Schedule III, Real Estate Investment Property, Net, Total | 5,995,000 us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_WatermanPlazaMember
Retail Properties [Member] | Yucca Valley Retail Center [Member] |
Real Estate And Accumulated Depreciation [Line Items] |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances | 2,982,000 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_YuccaValleyRetailCenterMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land | 2,811,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_YuccaValleyRetailCenterMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements | 5,175,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_YuccaValleyRetailCenterMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total | 7,986,000 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_YuccaValleyRetailCenterMember
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements | 400,000 us-gaap_SECScheduleIIIRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_YuccaValleyRetailCenterMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land | 2,811,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_YuccaValleyRetailCenterMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements | 6,323,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_YuccaValleyRetailCenterMember
SEC Schedule III, Real Estate, Gross, Total | 9,134,000 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_YuccaValleyRetailCenterMember
Real Estate Accumulated Depreciation | 1,183,000 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_YuccaValleyRetailCenterMember
SEC Schedule III, Real Estate Investment Property, Net, Total | 7,951,000 us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_YuccaValleyRetailCenterMember
Retail Properties [Member] | Union Town Center [Member] |
Real Estate And Accumulated Depreciation [Line Items] |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances | 8,440,000 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_UnionTownCenterMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land | 1,750,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_UnionTownCenterMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements | 9,462,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_UnionTownCenterMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total | 11,212,000 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_UnionTownCenterMember
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements | 0 us-gaap_SECScheduleIIIRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_UnionTownCenterMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land | 1,750,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_UnionTownCenterMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements | 9,610,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_UnionTownCenterMember
SEC Schedule III, Real Estate, Gross, Total | 11,360,000 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_UnionTownCenterMember
Real Estate Accumulated Depreciation | 0 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_UnionTownCenterMember
SEC Schedule III, Real Estate Investment Property, Net, Total | 11,360,000 us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_RetailPropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_UnionTownCenterMember
Self Storage Properties [Member] |
Real Estate And Accumulated Depreciation [Line Items] |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances | 17,002,000 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land | 7,258,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements | 25,451,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total | 32,709,000 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements | 260,000 us-gaap_SECScheduleIIIRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land | 7,258,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements | 25,712,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember
SEC Schedule III, Real Estate, Gross, Total | 32,971,000 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember
Real Estate Accumulated Depreciation | 3,863,000 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember
Mortgage Loans on Real Estate, Write-down or Reserve, Amount | 0 us-gaap_MortgageLoansOnRealEstateWritedownOrReserveAmount1 / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember
SEC Schedule III, Real Estate Investment Property, Net, Total | 29,107,000 us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember
Self Storage Properties [Member] | Sparkys Palm Self Storage [Member] |
Real Estate And Accumulated Depreciation [Line Items] |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances | 2,400,000 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysPalmSelfStorageMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land | 784,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysPalmSelfStorageMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements | 4,242,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysPalmSelfStorageMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total | 5,026,000 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysPalmSelfStorageMember
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements | 17,000 us-gaap_SECScheduleIIIRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysPalmSelfStorageMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land | 784,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysPalmSelfStorageMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements | 4,260,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysPalmSelfStorageMember
SEC Schedule III, Real Estate, Gross, Total | 5,044,000 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysPalmSelfStorageMember
Real Estate Accumulated Depreciation | 778,000 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysPalmSelfStorageMember
SEC Schedule III, Real Estate Investment Property, Net, Total | 4,266,000 us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysPalmSelfStorageMember
Self Storage Properties [Member] | Sparky's Joshua Self-Storage [Member] |
Real Estate And Accumulated Depreciation [Line Items] |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances | 3,318,000 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysJoshuaSelfStorageMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land | 1,281,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysJoshuaSelfStorageMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements | 6,726,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysJoshuaSelfStorageMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total | 8,007,000 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysJoshuaSelfStorageMember
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements | 57,000 us-gaap_SECScheduleIIIRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysJoshuaSelfStorageMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land | 1,281,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysJoshuaSelfStorageMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements | 6,783,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysJoshuaSelfStorageMember
SEC Schedule III, Real Estate, Gross, Total | 8,065,000 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysJoshuaSelfStorageMember
Real Estate Accumulated Depreciation | 1,404,000 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysJoshuaSelfStorageMember
SEC Schedule III, Real Estate Investment Property, Net, Total | 6,661,000 us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysJoshuaSelfStorageMember
Self Storage Properties [Member] | Sparky's Thousand Palms Self-Storage [Member] |
Real Estate And Accumulated Depreciation [Line Items] |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances | 4,118,000 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysThousandPalmsSelfStorageMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land | 584,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysThousandPalmsSelfStorageMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements | 5,580,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysThousandPalmsSelfStorageMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total | 6,164,000 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysThousandPalmsSelfStorageMember
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements | 17,000 us-gaap_SECScheduleIIIRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysThousandPalmsSelfStorageMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land | 584,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysThousandPalmsSelfStorageMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements | 5,597,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysThousandPalmsSelfStorageMember
SEC Schedule III, Real Estate, Gross, Total | 6,181,000 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysThousandPalmsSelfStorageMember
Real Estate Accumulated Depreciation | 815,000 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysThousandPalmsSelfStorageMember
SEC Schedule III, Real Estate Investment Property, Net, Total | 5,365,000 us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysThousandPalmsSelfStorageMember
Self Storage Properties [Member] | Sparky's Hesperia East Self-Storage [Member] |
Real Estate And Accumulated Depreciation [Line Items] |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances | 834,000 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysHesperiaEastSelfStorageMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land | 1,227,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysHesperiaEastSelfStorageMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements | 1,305,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysHesperiaEastSelfStorageMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total | 2,532,000 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysHesperiaEastSelfStorageMember
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements | 31,000 us-gaap_SECScheduleIIIRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysHesperiaEastSelfStorageMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land | 1,227,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysHesperiaEastSelfStorageMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements | 1,336,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysHesperiaEastSelfStorageMember
SEC Schedule III, Real Estate, Gross, Total | 2,563,000 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysHesperiaEastSelfStorageMember
Real Estate Accumulated Depreciation | 187,000 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysHesperiaEastSelfStorageMember
SEC Schedule III, Real Estate Investment Property, Net, Total | 2,376,000 us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysHesperiaEastSelfStorageMember
Self Storage Properties [Member] | Sparky's Rialto Self-Storage [Member] |
Real Estate And Accumulated Depreciation [Line Items] |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances | 2,127,000 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysRialtoSelfStorageMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land | 1,310,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysRialtoSelfStorageMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements | 3,820,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysRialtoSelfStorageMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total | 5,130,000 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysRialtoSelfStorageMember
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements | 30,000 us-gaap_SECScheduleIIIRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysRialtoSelfStorageMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land | 1,310,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysRialtoSelfStorageMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements | 3,850,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysRialtoSelfStorageMember
SEC Schedule III, Real Estate, Gross, Total | 5,160,000 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysRialtoSelfStorageMember
Real Estate Accumulated Depreciation | 479,000 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysRialtoSelfStorageMember
SEC Schedule III, Real Estate Investment Property, Net, Total | 4,681,000 us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysRialtoSelfStorageMember
Self Storage Properties [Member] | Sparky's Lancaster Self Storage 1 [Member] |
Real Estate And Accumulated Depreciation [Line Items] |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances | 1,914,000 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysLancasterSelfStorage1Member
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land | 949,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysLancasterSelfStorage1Member
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements | 2,701,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysLancasterSelfStorage1Member
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total | 3,650,000 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysLancasterSelfStorage1Member
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements | 76,000 us-gaap_SECScheduleIIIRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysLancasterSelfStorage1Member
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land | 949,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysLancasterSelfStorage1Member
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements | 2,777,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysLancasterSelfStorage1Member
SEC Schedule III, Real Estate, Gross, Total | 3,726,000 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysLancasterSelfStorage1Member
Real Estate Accumulated Depreciation | 110,000 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysLancasterSelfStorage1Member
SEC Schedule III, Real Estate Investment Property, Net, Total | 3,616,000 us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysLancasterSelfStorage1Member
Self Storage Properties [Member] | Sparky's Sunrise Self-Storage [Member] |
Real Estate And Accumulated Depreciation [Line Items] |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances | 2,291,000 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysSunriseSelfStorageMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land | 1,123,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysSunriseSelfStorageMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements | 1,077,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysSunriseSelfStorageMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total | 2,200,000 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysSunriseSelfStorageMember
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements | 32,000 us-gaap_SECScheduleIIIRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysSunriseSelfStorageMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land | 1,123,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysSunriseSelfStorageMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements | 1,109,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysSunriseSelfStorageMember
SEC Schedule III, Real Estate, Gross, Total | 2,232,000 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysSunriseSelfStorageMember
Real Estate Accumulated Depreciation | 90,000 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysSunriseSelfStorageMember
SEC Schedule III, Real Estate Investment Property, Net, Total | 2,142,000 us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_SelfStoragePropertiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysSunriseSelfStorageMember
Model Home [Member] |
Real Estate And Accumulated Depreciation [Line Items] |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances | 7,703,000 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_ModelHomeMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land | 2,230,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_ModelHomeMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements | 11,822,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_ModelHomeMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total | 14,052,000 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_ModelHomeMember
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements | 0 us-gaap_SECScheduleIIIRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_ModelHomeMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land | 2,230,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_ModelHomeMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements | 11,826,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_ModelHomeMember
SEC Schedule III, Real Estate, Gross, Total | 14,056,000 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_ModelHomeMember
Real Estate Accumulated Depreciation | 462,000 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_ModelHomeMember
Mortgage Loans on Real Estate, Write-down or Reserve, Amount | 0 us-gaap_MortgageLoansOnRealEstateWritedownOrReserveAmount1 / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_ModelHomeMember
SEC Schedule III, Real Estate Investment Property, Net, Total | 13,592,000 us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_ModelHomeMember
Model Home [Member] | NetREIT Dubose Model Home REIT, Inc. [Member] |
Real Estate And Accumulated Depreciation [Line Items] |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances | 5,171,000 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_ModelHomeMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_NetreitDuboseModelHomeReitIncMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land | 1,451,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_ModelHomeMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_NetreitDuboseModelHomeReitIncMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements | 8,188,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_ModelHomeMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_NetreitDuboseModelHomeReitIncMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total | 9,639,000 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_ModelHomeMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_NetreitDuboseModelHomeReitIncMember
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements | 0 us-gaap_SECScheduleIIIRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_ModelHomeMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_NetreitDuboseModelHomeReitIncMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land | 1,451,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_ModelHomeMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_NetreitDuboseModelHomeReitIncMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements | 8,188,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_ModelHomeMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_NetreitDuboseModelHomeReitIncMember
SEC Schedule III, Real Estate, Gross, Total | 9,639,000 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_ModelHomeMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_NetreitDuboseModelHomeReitIncMember
Real Estate Accumulated Depreciation | 366,000 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_ModelHomeMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_NetreitDuboseModelHomeReitIncMember
Mortgage Loans on Real Estate, Write-down or Reserve, Amount | 0 us-gaap_MortgageLoansOnRealEstateWritedownOrReserveAmount1 / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_ModelHomeMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_NetreitDuboseModelHomeReitIncMember
SEC Schedule III, Real Estate Investment Property, Net, Total | 9,272,000 us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_ModelHomeMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_NetreitDuboseModelHomeReitIncMember
Model Home [Member] | Dubose Model Home Investors 201 L.P. [Member] |
Real Estate And Accumulated Depreciation [Line Items] |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances | 1,100,000 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_ModelHomeMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_DuboseModelHomeInvestors201LpMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land | 375,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_ModelHomeMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_DuboseModelHomeInvestors201LpMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements | 1,624,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_ModelHomeMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_DuboseModelHomeInvestors201LpMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total | 2,000,000 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_ModelHomeMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_DuboseModelHomeInvestors201LpMember
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements | 0 us-gaap_SECScheduleIIIRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_ModelHomeMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_DuboseModelHomeInvestors201LpMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land | 376,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_ModelHomeMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_DuboseModelHomeInvestors201LpMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements | 1,624,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_ModelHomeMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_DuboseModelHomeInvestors201LpMember
SEC Schedule III, Real Estate, Gross, Total | 2,000,000 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_ModelHomeMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_DuboseModelHomeInvestors201LpMember
Real Estate Accumulated Depreciation | 81,000 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_ModelHomeMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_DuboseModelHomeInvestors201LpMember
Mortgage Loans on Real Estate, Write-down or Reserve, Amount | 0 us-gaap_MortgageLoansOnRealEstateWritedownOrReserveAmount1 / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_ModelHomeMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_DuboseModelHomeInvestors201LpMember
SEC Schedule III, Real Estate Investment Property, Net, Total | 1,918,000 us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_ModelHomeMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_DuboseModelHomeInvestors201LpMember
Model Home [Member] | Dubose Model Home Investors 202, L.P. [Member] |
Real Estate And Accumulated Depreciation [Line Items] |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances | 1,432,000 us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_ModelHomeMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_DuboseModelHomeInvestors202LPMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land | 404,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_ModelHomeMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_DuboseModelHomeInvestors202LPMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements | 2,010,000 us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_ModelHomeMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_DuboseModelHomeInvestors202LPMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total | 2,413,000 us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_ModelHomeMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_DuboseModelHomeInvestors202LPMember
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements | 0 us-gaap_SECScheduleIIIRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_ModelHomeMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_DuboseModelHomeInvestors202LPMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land | 403,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_ModelHomeMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_DuboseModelHomeInvestors202LPMember
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements | 2,014,000 us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_ModelHomeMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_DuboseModelHomeInvestors202LPMember
SEC Schedule III, Real Estate, Gross, Total | 2,417,000 us-gaap_RealEstateGrossAtCarryingValue / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_ModelHomeMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_DuboseModelHomeInvestors202LPMember
Real Estate Accumulated Depreciation | 15,000 us-gaap_RealEstateAccumulatedDepreciation / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_ModelHomeMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_DuboseModelHomeInvestors202LPMember
Mortgage Loans on Real Estate, Write-down or Reserve, Amount | 0 us-gaap_MortgageLoansOnRealEstateWritedownOrReserveAmount1 / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_ModelHomeMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_DuboseModelHomeInvestors202LPMember
SEC Schedule III, Real Estate Investment Property, Net, Total | $ 2,402,000 us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = netr_ModelHomeMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_DuboseModelHomeInvestors202LPMember

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- Definition Amount of accumulated depreciation pertaining to real estate investments for entities with a substantial portion of business acquiring and holding investment real estate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 970 -SubTopic 360 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28.FN4) -URI http://asc.fasb.org/extlink&oid=6590653&loc=d3e638233-123024 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule III) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 28 -Article 12 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph c -Subparagraph Schedule III -Article 5 + Details
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- Definition Amount of lien or mortgage outstanding on real estate investment properties for entities with a substantial portion of business acquiring and holding investment real estate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 970 -SubTopic 360 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28) -URI http://asc.fasb.org/extlink&oid=6590653&loc=d3e638233-123024 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule III) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 28 -Article 12 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph c -Subparagraph Schedule III -Article 5 + Details
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- Definition Amount before accumulated depreciation of buildings and improvements for entities with a substantial portion of business acquiring and holding investment real estate. Excludes real estate not held as an investment or interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 970 -SubTopic 360 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28) -URI http://asc.fasb.org/extlink&oid=6590653&loc=d3e638233-123024 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule III) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 28 -Article 12 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph c -Subparagraph Schedule III -Article 5 + Details
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