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Schedule III - Real Estate and Accumulated Depreciation (Details) (USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances $ 106,762,238us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances      
Real Estate and Accumulated Depreciation, Initial Cost, Land 197,046,698us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand      
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 376,664,815us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 15,435,489us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts      
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 195,091,303us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand      
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 394,055,709us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements      
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 589,147,012us-gaap_RealEstateGrossAtCarryingValue 476,168,824us-gaap_RealEstateGrossAtCarryingValue 398,811,830us-gaap_RealEstateGrossAtCarryingValue 340,073,911us-gaap_RealEstateGrossAtCarryingValue
Real Estate and Accumulated Depreciation, Accumulated Depreciation 59,089,851us-gaap_RealEstateAccumulatedDepreciation 65,436,739us-gaap_RealEstateAccumulatedDepreciation 58,856,688us-gaap_RealEstateAccumulatedDepreciation 68,589,778us-gaap_RealEstateAccumulatedDepreciation
Borman Center, MI [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BormanCenterMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 550,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BormanCenterMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 562,404us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BormanCenterMiMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 1,087,596us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BormanCenterMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 550,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BormanCenterMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,650,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BormanCenterMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 2,200,000us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BormanCenterMiMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 1,618,022us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BormanCenterMiMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 1977      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Capital Plaza, KY [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CapitalPlazaKyMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 7,379us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CapitalPlazaKyMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 2,240,607us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CapitalPlazaKyMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 3,510,133us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CapitalPlazaKyMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 7,379us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CapitalPlazaKyMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 5,750,740us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CapitalPlazaKyMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 5,758,119us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CapitalPlazaKyMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 2,887,183us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CapitalPlazaKyMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 1978      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Grayling Plaza, MI [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GraylingPlazaMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 200,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GraylingPlazaMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,778,657us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GraylingPlazaMiMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GraylingPlazaMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 200,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GraylingPlazaMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,778,657us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GraylingPlazaMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,978,657us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GraylingPlazaMiMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 1,363,755us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GraylingPlazaMiMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 1984      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Marshall Plaza Two, MI [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MarshallPlazaTwoMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 0us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MarshallPlazaTwoMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 4,662,230us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MarshallPlazaTwoMiMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 159,688us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MarshallPlazaTwoMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 0us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MarshallPlazaTwoMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 4,821,918us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MarshallPlazaTwoMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 4,821,918us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MarshallPlazaTwoMiMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 2,822,969us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MarshallPlazaTwoMiMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 1990      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
North Lakeland Plaza, FL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NorthLakelandPlazaFlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 1,641,879us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NorthLakelandPlazaFlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 6,364,379us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NorthLakelandPlazaFlMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 2,052,496us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NorthLakelandPlazaFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 1,641,879us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NorthLakelandPlazaFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 8,416,875us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NorthLakelandPlazaFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 10,058,754us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NorthLakelandPlazaFlMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 5,126,106us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NorthLakelandPlazaFlMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 1987      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Oscoda Plaza, MI [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_OscodaPlazaMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 183,295us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_OscodaPlazaMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,872,854us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_OscodaPlazaMiMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_OscodaPlazaMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 183,295us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_OscodaPlazaMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,872,854us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_OscodaPlazaMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 2,056,149us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_OscodaPlazaMiMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 1,433,536us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_OscodaPlazaMiMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 1984      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Rapids Associates, MI [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RapidsAssociatesMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 705,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RapidsAssociatesMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 6,854,790us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RapidsAssociatesMiMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 2,157,041us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RapidsAssociatesMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 705,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RapidsAssociatesMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 9,011,831us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RapidsAssociatesMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 9,716,831us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RapidsAssociatesMiMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 4,600,697us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RapidsAssociatesMiMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 1990      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
West Frankfort Plaza, IL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WestFrankfortPlazaIlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 8,002us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WestFrankfortPlazaIlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 784,077us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WestFrankfortPlazaIlMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 202,463us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WestFrankfortPlazaIlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 8,002us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WestFrankfortPlazaIlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 986,540us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WestFrankfortPlazaIlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 994,542us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WestFrankfortPlazaIlMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 700,383us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WestFrankfortPlazaIlMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 1982      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Omaha Store, NE [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_OmahaStoreNeMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 150,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_OmahaStoreNeMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 0us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_OmahaStoreNeMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_OmahaStoreNeMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 150,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_OmahaStoreNeMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 0us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_OmahaStoreNeMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 150,000us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_OmahaStoreNeMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_OmahaStoreNeMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 1995      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Wichita Store, KS [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 1,669,449us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WichitaStoreKsMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 1,039,195us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WichitaStoreKsMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,690,644us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WichitaStoreKsMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition (48,910)us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WichitaStoreKsMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 1,139,677us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WichitaStoreKsMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,541,252us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WichitaStoreKsMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 2,680,929us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WichitaStoreKsMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 775,757us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WichitaStoreKsMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 1995      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Monroeville, PA [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MonroevillePaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 6,332,158us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MonroevillePaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 2,249,724us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MonroevillePaMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition (2,586,265)us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MonroevillePaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 3,153,890us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MonroevillePaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,841,727us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MonroevillePaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 5,995,617us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MonroevillePaMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 968,975us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MonroevillePaMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 1996      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Boynton Beach, FL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BoyntonBeachFl1Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 1,534,942us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BoyntonBeachFl1Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 2,043,122us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BoyntonBeachFl1Member
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 3,754,994us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BoyntonBeachFl1Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 1,534,942us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BoyntonBeachFl1Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 5,798,116us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BoyntonBeachFl1Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 7,333,058us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BoyntonBeachFl1Member
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 1,343,608us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BoyntonBeachFl1Member
     
Real Estate and Accumulated Depreciation, Date of Acquisition 1996      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Lawrence, KS [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LawrenceKsMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 981,331us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LawrenceKsMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 3,000,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LawrenceKsMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition (1,510,873)us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LawrenceKsMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 419,791us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LawrenceKsMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,050,667us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LawrenceKsMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 2,470,458us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LawrenceKsMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 1,221,625us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LawrenceKsMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 1997      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Waterford, MI [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 579,356us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WaterfordMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 971,009us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WaterfordMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,562,869us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WaterfordMiMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 135,390us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WaterfordMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 971,009us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WaterfordMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,698,259us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WaterfordMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 2,669,268us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WaterfordMiMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 720,723us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WaterfordMiMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 1997      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Chesterfield Township, MI [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 636,140us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ChesterfieldTownshipMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 1,350,590us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ChesterfieldTownshipMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,757,830us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ChesterfieldTownshipMiMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition (46,164)us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ChesterfieldTownshipMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 1,350,590us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ChesterfieldTownshipMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,711,666us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ChesterfieldTownshipMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 3,062,256us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ChesterfieldTownshipMiMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 706,644us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ChesterfieldTownshipMiMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 1998      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Grand Blanc, MI [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 607,750us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GrandBlancMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 1,104,285us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GrandBlancMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,998,919us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GrandBlancMiMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 43,929us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GrandBlancMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 1,104,285us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GrandBlancMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,042,848us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GrandBlancMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 3,147,133us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GrandBlancMiMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 812,241us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GrandBlancMiMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 1998      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Pontiac, MI [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 582,728us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PontiacMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 1,144,190us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PontiacMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,808,955us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PontiacMiMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition (113,506)us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PontiacMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 1,144,190us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PontiacMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,695,449us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PontiacMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 2,839,639us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PontiacMiMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 690,483us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PontiacMiMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 1998      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Mt Pleasant Shopping Ctr, MI [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MtPleasantShoppingCenterMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 907,600us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MtPleasantShoppingCenterMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 8,081,968us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MtPleasantShoppingCenterMiMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 1,024,052us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MtPleasantShoppingCenterMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 907,600us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MtPleasantShoppingCenterMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 9,106,020us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MtPleasantShoppingCenterMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 10,013,620us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MtPleasantShoppingCenterMiMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 4,808,049us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MtPleasantShoppingCenterMiMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 1973      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Rochester, MI [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 1,582,374us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RochesterMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 2,438,740us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RochesterMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 2,188,050us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RochesterMiMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 1,949us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RochesterMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 2,438,740us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RochesterMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,189,999us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RochesterMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 4,628,739us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RochesterMiMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 848,601us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RochesterMiMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 1999      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Ypsilanti, MI [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 1,429,190us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_YpsilantiMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 2,050,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_YpsilantiMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 2,222,097us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_YpsilantiMiMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 32,641us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_YpsilantiMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 2,050,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_YpsilantiMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,254,738us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_YpsilantiMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 4,304,738us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_YpsilantiMiMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 844,665us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_YpsilantiMiMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 1999      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Petoskey, MI [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 994,116us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PetoskeyMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 0us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PetoskeyMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 2,332,473us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PetoskeyMiMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 1,179us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PetoskeyMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 0us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PetoskeyMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,333,652us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PetoskeyMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 2,333,652us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PetoskeyMiMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 855,585us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PetoskeyMiMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2000      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Flint, MI 1 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 1,499,465us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FlintMi1Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 2,026,625us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FlintMi1Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,879,700us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FlintMi1Member
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition (1,201)us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FlintMi1Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 2,026,625us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FlintMi1Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,878,499us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FlintMi1Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 3,905,124us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FlintMi1Member
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 657,481us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FlintMi1Member
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2000      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Flint, MI 2 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 1,290,219us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FlintMi2Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 1,477,680us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FlintMi2Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 2,241,293us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FlintMi2Member
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FlintMi2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 1,477,680us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FlintMi2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,241,293us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FlintMi2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 3,718,973us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FlintMi2Member
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 777,445us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FlintMi2Member
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2001      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
New Baltimore, MI [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 1,100,713us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NewBaltimoreMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 1,250,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NewBaltimoreMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 2,285,781us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NewBaltimoreMiMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition (16,502)us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NewBaltimoreMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 1,250,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NewBaltimoreMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,269,279us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NewBaltimoreMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 3,519,279us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NewBaltimoreMiMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 758,965us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NewBaltimoreMiMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2001      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Flint, MI 3 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 2,969,578us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FlintMi3Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 1,729,851us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FlintMi3Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,798,091us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FlintMi3Member
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 660us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FlintMi3Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 1,729,851us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FlintMi3Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,798,751us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FlintMi3Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 3,528,602us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FlintMi3Member
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 571,441us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FlintMi3Member
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2002      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Indianapolis, IN [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_IndianapolisInMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 180,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_IndianapolisInMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,117,617us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_IndianapolisInMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_IndianapolisInMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 180,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_IndianapolisInMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,117,617us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_IndianapolisInMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,297,617us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_IndianapolisInMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 362,158us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_IndianapolisInMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2002      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Big Rapids, MI [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BigRapidsMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 1,201,675us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BigRapidsMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 2,014,107us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BigRapidsMiMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition (2,000)us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BigRapidsMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 1,201,675us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BigRapidsMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,012,107us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BigRapidsMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 3,213,782us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BigRapidsMiMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 591,097us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BigRapidsMiMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2003      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Flint, MI 4 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FlintMi4Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 0us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FlintMi4Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 471,272us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FlintMi4Member
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition (201,810)us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FlintMi4Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 0us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FlintMi4Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 269,462us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FlintMi4Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 269,462us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FlintMi4Member
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 125,748us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FlintMi4Member
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2003      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 20 years      
Canton Twp, MI [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CantonTwpMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 1,550,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CantonTwpMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 2,132,096us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CantonTwpMiMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 23,020us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CantonTwpMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 1,550,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CantonTwpMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,155,116us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CantonTwpMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 3,705,116us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CantonTwpMiMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 597,098us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CantonTwpMiMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2003      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Flint, MI 5 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 3,441,685us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FlintMi5Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 1,537,400us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FlintMi5Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,961,674us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FlintMi5Member
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FlintMi5Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 1,537,400us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FlintMi5Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,961,674us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FlintMi5Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 3,499,074us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FlintMi5Member
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 531,371us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FlintMi5Member
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2004      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Webster, NY [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WebsterNyMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 1,600,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WebsterNyMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 2,438,781us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WebsterNyMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WebsterNyMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 1,600,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WebsterNyMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,438,781us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WebsterNyMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 4,038,781us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WebsterNyMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 657,967us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WebsterNyMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2004      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Albion, NY [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AlbionNyMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 1,900,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AlbionNyMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 3,037,864us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AlbionNyMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AlbionNyMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 1,900,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AlbionNyMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,037,864us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AlbionNyMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 4,937,864us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AlbionNyMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 768,962us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AlbionNyMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2004      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Flint, MI 6 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 2,631,221us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FlintMi6Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 1,029,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FlintMi6Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 2,165,463us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FlintMi6Member
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition (6,666)us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FlintMi6Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 1,029,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FlintMi6Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,158,797us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FlintMi6Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 3,187,797us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FlintMi6Member
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 546,405us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FlintMi6Member
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2004      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Lansing, MI [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LansingMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 785,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LansingMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 348,501us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LansingMiMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 3,045us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LansingMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 785,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LansingMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 351,546us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LansingMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,136,546us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LansingMiMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 92,245us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LansingMiMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2004      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Boynton Beach, FL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BoyntonBeachFlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 1,569,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BoyntonBeachFlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 2,363,524us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BoyntonBeachFlMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BoyntonBeachFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 1,569,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BoyntonBeachFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,363,524us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BoyntonBeachFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 3,932,524us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BoyntonBeachFlMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 633,826us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BoyntonBeachFlMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2004      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Midland, MI [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MidlandMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 2,350,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MidlandMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 2,313,413us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MidlandMiMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition (79,235)us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MidlandMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 2,268,695us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MidlandMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,315,483us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MidlandMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 4,584,178us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MidlandMiMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 547,439us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MidlandMiMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2005      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Grand Rapids, MI [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 2,959,784us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GrandRapidsMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 1,450,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GrandRapidsMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 2,646,591us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GrandRapidsMiMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GrandRapidsMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 1,450,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GrandRapidsMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,646,591us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GrandRapidsMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 4,096,591us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GrandRapidsMiMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 617,539us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GrandRapidsMiMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2005      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Delta Township, MI [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 3,090,351us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_DeltaTownshipMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 2,075,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_DeltaTownshipMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 2,535,971us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_DeltaTownshipMiMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 7,004us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_DeltaTownshipMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 2,075,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_DeltaTownshipMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,542,975us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_DeltaTownshipMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 4,617,975us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_DeltaTownshipMiMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 582,824us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_DeltaTownshipMiMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2005      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Roseville, MI [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 2,336,328us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RosevilleMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 1,771,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RosevilleMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 2,327,052us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RosevilleMiMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RosevilleMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 1,771,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RosevilleMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,327,052us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RosevilleMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 4,098,052us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RosevilleMiMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 530,857us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RosevilleMiMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2005      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Mt Pleasant, MI [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 1,252,087us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MtPleasantMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 1,075,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MtPleasantMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,432,390us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MtPleasantMiMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 4,787us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MtPleasantMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 1,075,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MtPleasantMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,437,177us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MtPleasantMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 2,512,177us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MtPleasantMiMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 326,346us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MtPleasantMiMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2005      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
N Cape May, NJ [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NCapeMayNjMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 1,075,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NCapeMayNjMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,430,092us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NCapeMayNjMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 495us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NCapeMayNjMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 1,075,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NCapeMayNjMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,430,587us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NCapeMayNjMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 2,505,587us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NCapeMayNjMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 324,859us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NCapeMayNjMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2005      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Summit Twp, MI [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 1,431,882us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SummitTwpMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 998,460us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SummitTwpMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,336,357us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SummitTwpMiMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 12,686us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SummitTwpMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 998,460us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SummitTwpMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,349,043us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SummitTwpMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 2,347,503us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SummitTwpMiMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 277,204us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SummitTwpMiMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2006      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Livonia, MI [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 4,240,564us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LivoniaMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 1,200,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LivoniaMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 3,441,694us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LivoniaMiMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 817,589us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LivoniaMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 1,200,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LivoniaMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 4,259,283us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LivoniaMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 5,459,283us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LivoniaMiMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 778,062us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LivoniaMiMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2007      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Barnesville, GA [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BarnesvilleGaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 932,500us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BarnesvilleGaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 2,091,514us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BarnesvilleGaMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 5,490us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BarnesvilleGaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 932,500us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BarnesvilleGaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,097,004us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BarnesvilleGaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 3,029,504us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BarnesvilleGaMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 377,868us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BarnesvilleGaMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2007      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
East Lansing, MI [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_EastLansingMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 240,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_EastLansingMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 54,531us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_EastLansingMiMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_EastLansingMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 240,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_EastLansingMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 54,531us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_EastLansingMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 294,531us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_EastLansingMiMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 9,519us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_EastLansingMiMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2007      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Plainfield, IN [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PlainfieldInMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 4,549,758us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PlainfieldInMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 0us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PlainfieldInMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 114,383us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PlainfieldInMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 4,664,141us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PlainfieldInMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 0us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PlainfieldInMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 4,664,141us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PlainfieldInMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PlainfieldInMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2007      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Macomb Township, MI 1 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 3,955,574us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MacombTownshipMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 2,621,500us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MacombTownshipMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 3,484,212us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MacombTownshipMiMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition (83,479)us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MacombTownshipMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 2,537,222us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MacombTownshipMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,485,011us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MacombTownshipMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 6,022,233us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MacombTownshipMiMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 595,339us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MacombTownshipMiMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2008      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Shelby Township, MI [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 3,383,595us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ShelbyTownshipMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 2,055,174us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ShelbyTownshipMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 2,533,876us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ShelbyTownshipMiMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 47,775us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ShelbyTownshipMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 2,058,474us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ShelbyTownshipMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,578,351us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ShelbyTownshipMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 4,636,825us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ShelbyTownshipMiMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 412,803us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ShelbyTownshipMiMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2008      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Silver Springs Shores, FL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 3,637,014us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SilverSpringsShoresFlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 1,975,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SilverSpringsShoresFlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 2,504,112us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SilverSpringsShoresFlMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition (5,400)us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SilverSpringsShoresFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 1,975,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SilverSpringsShoresFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,498,712us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SilverSpringsShoresFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 4,473,712us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SilverSpringsShoresFlMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 374,942us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SilverSpringsShoresFlMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2009      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Brighton, MI [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BrightonMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 1,365,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BrightonMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 2,802,036us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BrightonMiMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 5,615us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BrightonMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 1,365,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BrightonMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,807,651us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BrightonMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 4,172,651us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BrightonMiMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 409,370us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BrightonMiMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2009      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Port St John, FL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PortStJohnFlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 2,320,860us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PortStJohnFlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 2,402,641us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PortStJohnFlMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 880us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PortStJohnFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 2,320,860us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PortStJohnFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,403,521us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PortStJohnFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 4,724,381us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PortStJohnFlMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 340,484us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PortStJohnFlMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2009      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Lowell, MI [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LowellMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 890,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LowellMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,930,182us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LowellMiMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 10,190us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LowellMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 890,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LowellMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,940,372us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LowellMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 2,830,372us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LowellMiMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 254,610us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LowellMiMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2009      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Southfield, MI 1 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SouthfieldMi1Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 1,200,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SouthfieldMi1Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 125,616us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SouthfieldMi1Member
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 2,064us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SouthfieldMi1Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 1,200,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SouthfieldMi1Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 127,690us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SouthfieldMi1Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,327,690us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SouthfieldMi1Member
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 16,617us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SouthfieldMi1Member
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2009      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Atchison, KS [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AtchisonKsMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 943,750us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AtchisonKsMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 3,021,672us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AtchisonKsMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AtchisonKsMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 823,170us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AtchisonKsMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,142,252us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AtchisonKsMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 3,965,422us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AtchisonKsMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 351,996us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AtchisonKsMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2010      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Johnstown, OH [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 2,384,927us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JohnstownOhMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 485,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JohnstownOhMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 2,799,502us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JohnstownOhMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JohnstownOhMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 485,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JohnstownOhMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,799,502us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JohnstownOhMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 3,284,502us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JohnstownOhMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 314,945us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JohnstownOhMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2010      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Lake in the Hills, IL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LakeInHillsIlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 2,135,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LakeInHillsIlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 3,328,560us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LakeInHillsIlMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LakeInHillsIlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 1,690,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LakeInHillsIlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,773,560us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LakeInHillsIlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 5,463,560us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LakeInHillsIlMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 418,963us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LakeInHillsIlMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2010      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Concord, NC [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ConcordNcMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 7,676,305us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ConcordNcMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 0us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ConcordNcMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ConcordNcMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 7,676,305us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ConcordNcMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 0us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ConcordNcMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 7,676,305us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ConcordNcMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ConcordNcMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2010      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Antioch, IL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 1,669,449us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AntiochIlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 1,087,884us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AntiochIlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 0us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AntiochIlMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AntiochIlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 1,087,884us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AntiochIlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 0us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AntiochIlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,087,884us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AntiochIlMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AntiochIlMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2010      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
St Augustine Shores, FL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_StAugustineShoresFlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 1,700,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_StAugustineShoresFlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,973,929us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_StAugustineShoresFlMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition (4,754)us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_StAugustineShoresFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 1,700,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_StAugustineShoresFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,969,175us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_StAugustineShoresFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 3,669,175us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_StAugustineShoresFlMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 202,933us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_StAugustineShoresFlMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2010      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Atlantic Beach, FL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 3,452,182us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AtlanticBeachFlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 1,650,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AtlanticBeachFlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,904,357us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AtlanticBeachFlMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 1,262us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AtlanticBeachFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 1,650,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AtlanticBeachFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,905,619us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AtlanticBeachFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 3,555,619us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AtlanticBeachFlMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 198,398us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AtlanticBeachFlMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2010      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Mansfield, CT [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 2,170,284us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MansfieldCtMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 700,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MansfieldCtMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,902,191us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MansfieldCtMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 508us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MansfieldCtMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 700,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MansfieldCtMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,902,699us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MansfieldCtMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 2,602,699us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MansfieldCtMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 196,213us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MansfieldCtMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2010      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Spring Grove, IL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 2,313,000us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SpringGroveIlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 1,191,199us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SpringGroveIlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 0us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SpringGroveIlMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 968us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SpringGroveIlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 1,192,167us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SpringGroveIlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 0us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SpringGroveIlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,192,167us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SpringGroveIlMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SpringGroveIlMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2010      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Ann Arbor, MI [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AnnArborMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 0us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AnnArborMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 3,061,507us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AnnArborMiMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 2,634,651us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AnnArborMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 2,660,582us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AnnArborMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,035,576us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AnnArborMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 5,696,158us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AnnArborMiMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 321,871us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AnnArborMiMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2010      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Tallahassee, FL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 1,628,000us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_TallahasseeFlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 0us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_TallahasseeFlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,482,462us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_TallahasseeFlMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_TallahasseeFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 0us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_TallahasseeFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,482,462us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_TallahasseeFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,482,462us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_TallahasseeFlMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 149,791us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_TallahasseeFlMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2010      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Wilmington, NC [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 2,186,000us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WilmingtonNcMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 1,500,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WilmingtonNcMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,348,591us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WilmingtonNcMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WilmingtonNcMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 1,500,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WilmingtonNcMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,348,591us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WilmingtonNcMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 2,848,591us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WilmingtonNcMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 129,240us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WilmingtonNcMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2011      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Marietta, GA [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 900,000us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MariettaGaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 575,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MariettaGaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 696,297us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MariettaGaMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 6,359us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MariettaGaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 575,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MariettaGaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 702,656us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MariettaGaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,277,656us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MariettaGaMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 61,402us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MariettaGaMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2011      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Baltimore, MD [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 2,534,000us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BaltimoreMdMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 2,610,430us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BaltimoreMdMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 0us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BaltimoreMdMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition (3,447)us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BaltimoreMdMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 2,606,983us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BaltimoreMdMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 0us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BaltimoreMdMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 2,606,983us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BaltimoreMdMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BaltimoreMdMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2011      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Dallas, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 1,844,000us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_DallasTxMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 701,320us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_DallasTxMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 778,905us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_DallasTxMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 1,042,730us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_DallasTxMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 701,320us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_DallasTxMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,821,635us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_DallasTxMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 2,522,955us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_DallasTxMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 144,737us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_DallasTxMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2011      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Chandler, AZ [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 1,550,203us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ChandlerAzMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 332,868us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ChandlerAzMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 793,898us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ChandlerAzMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 360us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ChandlerAzMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 332,868us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ChandlerAzMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 794,258us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ChandlerAzMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,127,126us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ChandlerAzMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 64,571us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ChandlerAzMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2011      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
New Lenox, IL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 1,192,464us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NewLenoxIlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 1,422,488us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NewLenoxIlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 0us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NewLenoxIlMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NewLenoxIlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 1,422,488us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NewLenoxIlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 0us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NewLenoxIlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,422,488us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NewLenoxIlMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NewLenoxIlMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2011      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Roseville, CA [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 4,752,000us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RosevilleCaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 2,800,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RosevilleCaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 3,695,455us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RosevilleCaMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition (96,364)us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RosevilleCaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 2,695,636us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RosevilleCaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,703,455us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RosevilleCaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 6,399,091us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RosevilleCaMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 308,554us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RosevilleCaMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2011      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Fort Walton Beach, FL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 1,768,000us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FortWaltonBeachFlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 542,200us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FortWaltonBeachFlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,958,790us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FortWaltonBeachFlMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 303us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FortWaltonBeachFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 542,200us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FortWaltonBeachFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,959,093us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FortWaltonBeachFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 2,501,293us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FortWaltonBeachFlMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 151,009us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FortWaltonBeachFlMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2011      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Leawood, KS [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 3,204,294us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LeawoodKsMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 989,622us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LeawoodKsMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 3,003,541us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LeawoodKsMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 16,198us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LeawoodKsMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 989,622us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LeawoodKsMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,019,739us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LeawoodKsMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 4,009,361us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LeawoodKsMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 226,480us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LeawoodKsMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2011      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Salt Lake City, UT [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 4,948,724us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SaltLakeCityUtMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 0us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SaltLakeCityUtMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 6,810,104us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SaltLakeCityUtMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition (44,417)us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SaltLakeCityUtMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 0us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SaltLakeCityUtMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 6,765,687us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SaltLakeCityUtMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 6,765,687us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SaltLakeCityUtMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 542,896us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SaltLakeCityUtMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2011      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Burton, MI [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BurtonMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 80,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BurtonMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 0us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BurtonMiMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BurtonMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 80,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BurtonMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 0us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BurtonMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 80,000us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BurtonMiMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BurtonMiMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2011      
Macomb Township, MI 2 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 1,793,000us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MacombTownshipMi2Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 1,605,134us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MacombTownshipMi2Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 0us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MacombTownshipMi2Member
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MacombTownshipMi2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 1,605,134us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MacombTownshipMi2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 0us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MacombTownshipMi2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,605,134us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MacombTownshipMi2Member
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MacombTownshipMi2Member
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2012      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Madison, AL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 1,552,000us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MadisonAlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 675,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MadisonAlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,317,927us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MadisonAlMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MadisonAlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 675,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MadisonAlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,317,927us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MadisonAlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,992,927us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MadisonAlMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 98,844us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MadisonAlMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2012      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Walker, MI [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 887,000us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WalkerMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 219,200us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WalkerMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,024,738us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WalkerMiMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WalkerMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 219,200us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WalkerMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,024,738us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WalkerMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,243,938us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WalkerMiMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 70,448us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WalkerMiMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2012      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Portland, OR [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PortlandOrMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 7,969,403us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PortlandOrMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 0us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PortlandOrMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 161us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PortlandOrMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 7,969,564us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PortlandOrMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 0us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PortlandOrMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 7,969,564us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PortlandOrMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PortlandOrMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2012      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Cochran, GA [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CochranGaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 365,714us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CochranGaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 2,053,726us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CochranGaMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CochranGaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 365,714us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CochranGaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,053,726us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CochranGaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 2,419,440us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CochranGaMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 128,358us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CochranGaMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2012      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Baton Rouge, LA [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 1,073,217us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BatonRougeLaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 0us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BatonRougeLaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,188,322us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BatonRougeLaMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BatonRougeLaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 0us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BatonRougeLaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,188,322us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BatonRougeLaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,188,322us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BatonRougeLaMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 76,746us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BatonRougeLaMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2012      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Southfield, MI 2 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 1,483,000us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SouthfieldMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 1,178,215us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SouthfieldMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 0us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SouthfieldMiMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SouthfieldMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 1,178,215us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SouthfieldMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 0us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SouthfieldMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,178,215us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SouthfieldMiMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SouthfieldMiMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2012      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Clifton Heights, PA [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 3,898,994us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CliftonHeightsPaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 2,543,941us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CliftonHeightsPaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 3,038,561us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CliftonHeightsPaMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CliftonHeightsPaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 2,543,941us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CliftonHeightsPaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,038,561us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CliftonHeightsPaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 5,582,502us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CliftonHeightsPaMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 186,554us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CliftonHeightsPaMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2012      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Newark, DE [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 2,492,444us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NewarkDeMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 2,117,547us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NewarkDeMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 4,777,516us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NewarkDeMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NewarkDeMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 2,117,547us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NewarkDeMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 4,777,516us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NewarkDeMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 6,895,063us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NewarkDeMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 293,318us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NewarkDeMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2012      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Vineland, NJ [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 2,188,562us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_VinelandNjMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 4,102,710us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_VinelandNjMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,501,854us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_VinelandNjMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_VinelandNjMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 4,102,710us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_VinelandNjMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,501,854us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_VinelandNjMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 5,604,564us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_VinelandNjMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 92,792us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_VinelandNjMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2012      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Fort Mill, SC [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FortMillScMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 750,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FortMillScMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,187,380us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FortMillScMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FortMillScMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 750,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FortMillScMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,187,380us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FortMillScMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,937,380us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FortMillScMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 71,738us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FortMillScMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2012      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Spartanburg, SC [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SpartanburgScMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 250,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SpartanburgScMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 765,714us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SpartanburgScMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SpartanburgScMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 250,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SpartanburgScMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 765,714us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SpartanburgScMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,015,714us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SpartanburgScMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 45,464us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SpartanburgScMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2012      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Springfield, IL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SpringfieldIlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 302,520us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SpringfieldIlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 653,654us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SpringfieldIlMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SpringfieldIlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 302,520us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SpringfieldIlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 653,654us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SpringfieldIlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 956,174us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SpringfieldIlMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 38,130us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SpringfieldIlMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2012      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Jacksonville, NC [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JacksonvilleNcMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 676,930us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JacksonvilleNcMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,482,748us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JacksonvilleNcMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JacksonvilleNcMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 676,930us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JacksonvilleNcMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,482,748us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JacksonvilleNcMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 2,159,678us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JacksonvilleNcMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 86,494us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JacksonvilleNcMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2012      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Morrow, GA [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MorrowGaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 525,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MorrowGaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,383,489us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MorrowGaMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition (99,850)us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MorrowGaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 525,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MorrowGaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,283,639us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MorrowGaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,808,639us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MorrowGaMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 72,829us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MorrowGaMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2012      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Charlotte, NC [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CharlotteNcMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 1,822,900us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CharlotteNcMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 3,531,275us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CharlotteNcMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition (572,344)us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CharlotteNcMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 1,822,900us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CharlotteNcMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,958,931us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CharlotteNcMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 4,781,831us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CharlotteNcMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 162,660us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CharlotteNcMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2012      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Lyons, GA [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LyonsGaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 121,627us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LyonsGaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 2,155,635us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LyonsGaMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition (126,199)us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LyonsGaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 121,627us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LyonsGaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,029,436us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LyonsGaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 2,151,063us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LyonsGaMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 105,963us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LyonsGaMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2012      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Fuquay-Varina, NC [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FuquayvarinaNcMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 2,042,225us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FuquayvarinaNcMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,763,768us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FuquayvarinaNcMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition (255,778)us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FuquayvarinaNcMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 2,042,225us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FuquayvarinaNcMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,507,990us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FuquayvarinaNcMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 3,550,215us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FuquayvarinaNcMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 79,074us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FuquayvarinaNcMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2012      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Minneapolis, MN [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MinneapolisMnMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 1,088,015us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MinneapolisMnMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 345,958us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MinneapolisMnMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition (54,430)us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MinneapolisMnMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 826,635us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MinneapolisMnMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 552,908us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MinneapolisMnMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,379,543us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MinneapolisMnMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 28,366us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MinneapolisMnMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2012      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Lake Zurich, IL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LakeZurichIlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 780,974us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LakeZurichIlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 7,909,277us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LakeZurichIlMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 28,174us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LakeZurichIlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 780,974us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LakeZurichIlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 7,937,451us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LakeZurichIlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 8,718,425us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LakeZurichIlMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 405,111us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LakeZurichIlMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2012      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Lebanon, VA [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LebanonVaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 300,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LebanonVaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 612,582us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LebanonVaMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 16,363us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LebanonVaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 300,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LebanonVaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 628,945us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LebanonVaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 928,945us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LebanonVaMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 31,447us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LebanonVaMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2012      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Harlingen, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_HarlingenTxMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 430,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_HarlingenTxMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,614,378us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_HarlingenTxMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 12,854us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_HarlingenTxMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 430,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_HarlingenTxMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,627,232us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_HarlingenTxMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 2,057,232us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_HarlingenTxMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 81,362us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_HarlingenTxMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2012      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Wichita, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WichitaTxMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 340,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WichitaTxMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,530,971us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WichitaTxMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 12,854us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WichitaTxMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 340,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WichitaTxMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,543,825us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WichitaTxMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,883,825us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WichitaTxMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 77,191us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WichitaTxMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2012      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Pensacola, FL 1 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PensacolaFl1Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 650,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PensacolaFl1Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,165,415us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PensacolaFl1Member
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 12,854us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PensacolaFl1Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 650,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PensacolaFl1Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,178,269us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PensacolaFl1Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,828,269us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PensacolaFl1Member
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 58,913us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PensacolaFl1Member
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2012      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Pensacola, FL 2 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PensacolaFl2Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 400,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PensacolaFl2Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,507,583us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PensacolaFl2Member
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 12,854us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PensacolaFl2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 400,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PensacolaFl2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,520,437us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PensacolaFl2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,920,437us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PensacolaFl2Member
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 76,022us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PensacolaFl2Member
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2012      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Venice, FL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_VeniceFlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 1,300,196us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_VeniceFlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 0us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_VeniceFlMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 4,891us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_VeniceFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 1,305,087us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_VeniceFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 0us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_VeniceFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,305,087us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_VeniceFlMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_VeniceFlMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2012      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
St. Joseph, MO [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_StJosephMoMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 377,620us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_StJosephMoMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 7,639,521us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_StJosephMoMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_StJosephMoMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 377,620us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_StJosephMoMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 7,639,521us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_StJosephMoMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 8,017,141us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_StJosephMoMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 366,060us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_StJosephMoMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2013      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Statham, GA [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_StathamGaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 191,919us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_StathamGaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 3,851,073us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_StathamGaMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_StathamGaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 191,919us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_StathamGaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,851,073us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_StathamGaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 4,042,992us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_StathamGaMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 184,531us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_StathamGaMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2013      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
North Las Vegas, NV [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NorthLasVegasNvMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 214,552us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NorthLasVegasNvMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 717,435us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NorthLasVegasNvMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NorthLasVegasNvMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 214,552us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NorthLasVegasNvMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 717,435us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NorthLasVegasNvMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 931,987us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NorthLasVegasNvMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 33,630us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NorthLasVegasNvMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2013      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Memphis, TN [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MemphisTnMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 322,520us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MemphisTnMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 748,890us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MemphisTnMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MemphisTnMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 322,520us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MemphisTnMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 748,890us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MemphisTnMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,071,410us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MemphisTnMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 34,324us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MemphisTnMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2013      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Rancho Cordova, CA 2 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RanchoCordovaCa2Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 3,889,612us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RanchoCordovaCa2Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 3,232,662us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RanchoCordovaCa2Member
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 282,130us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RanchoCordovaCa2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 3,889,612us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RanchoCordovaCa2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,514,792us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RanchoCordovaCa2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 7,404,404us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RanchoCordovaCa2Member
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 148,482us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RanchoCordovaCa2Member
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2013      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Kissimmee, FL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_KissimmeeFlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 1,453,500us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_KissimmeeFlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 971,683us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_KissimmeeFlMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_KissimmeeFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 1,453,500us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_KissimmeeFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 971,683us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_KissimmeeFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 2,425,183us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_KissimmeeFlMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 42,511us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_KissimmeeFlMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2013      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Pinellas Park, FL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PinellasParkFlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 2,625,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PinellasParkFlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 874,542us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PinellasParkFlMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 3,965us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PinellasParkFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 2,625,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PinellasParkFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 878,507us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PinellasParkFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 3,503,507us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PinellasParkFlMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 34,716us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PinellasParkFlMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2013      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Manchester, CT [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ManchesterCtMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 397,800us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ManchesterCtMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 325,705us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ManchesterCtMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ManchesterCtMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 397,800us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ManchesterCtMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 325,705us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ManchesterCtMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 723,505us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ManchesterCtMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 13,571us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ManchesterCtMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2013      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Rapid City, SD [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RapidCitySdMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 1,017,800us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RapidCitySdMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 2,348,032us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RapidCitySdMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RapidCitySdMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 1,017,800us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RapidCitySdMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,348,032us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RapidCitySdMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 3,365,832us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RapidCitySdMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 95,389us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RapidCitySdMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2013      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Chicago, IL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ChicagoIlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 272,222us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ChicagoIlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 649,063us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ChicagoIlMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ChicagoIlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 272,222us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ChicagoIlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 649,063us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ChicagoIlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 921,285us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ChicagoIlMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 25,692us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ChicagoIlMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2013      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Brooklyn, OH [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BrooklynOhMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 3,643,700us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BrooklynOhMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 15,079,714us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BrooklynOhMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BrooklynOhMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 3,643,700us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BrooklynOhMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 15,079,714us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BrooklynOhMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 18,723,414us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BrooklynOhMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 565,489us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BrooklynOhMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2013      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Madisonville, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MadisonvilleTxMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 96,680us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MadisonvilleTxMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,087,642us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MadisonvilleTxMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MadisonvilleTxMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 96,680us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MadisonvilleTxMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,087,642us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MadisonvilleTxMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,184,322us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MadisonvilleTxMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 40,787us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MadisonvilleTxMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2013      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Baton Rouge, LA 2 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BatonRougeLa2Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 271,400us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BatonRougeLa2Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,086,434us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BatonRougeLa2Member
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BatonRougeLa2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 271,400us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BatonRougeLa2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,086,434us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BatonRougeLa2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,357,834us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BatonRougeLa2Member
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 38,478us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BatonRougeLa2Member
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2013      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Forest, MS [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ForestMsMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 0us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ForestMsMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,298,176us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ForestMsMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ForestMsMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 0us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ForestMsMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,298,176us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ForestMsMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,298,176us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ForestMsMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 45,977us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ForestMsMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2013      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Sun Valley, NV [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SunValleyNvMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 308,495us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SunValleyNvMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,373,336us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SunValleyNvMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 2,819us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SunValleyNvMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 308,495us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SunValleyNvMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,376,155us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SunValleyNvMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,684,650us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SunValleyNvMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 45,848us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SunValleyNvMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2013      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Rochester, NY [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RochesterNyMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 2,500,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RochesterNyMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 7,398,639us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RochesterNyMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RochesterNyMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 2,500,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RochesterNyMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 7,398,639us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RochesterNyMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 9,898,639us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RochesterNyMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 238,914us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RochesterNyMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2013      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Allentown, PA [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AllentownPaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 2,525,051us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AllentownPaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 7,896,613us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AllentownPaMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AllentownPaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 2,525,051us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AllentownPaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 7,896,613us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AllentownPaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 10,421,664us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AllentownPaMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 254,995us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AllentownPaMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2013      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Casselberry, FL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CasselberryFlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 1,804,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CasselberryFlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 793,101us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CasselberryFlMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CasselberryFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 1,804,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CasselberryFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 793,101us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CasselberryFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 2,597,101us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CasselberryFlMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 28,089us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CasselberryFlMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2013      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Berwyn, IL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BerwynIlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 186,791us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BerwynIlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 933,959us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BerwynIlMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 5,400us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BerwynIlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 186,791us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BerwynIlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 939,359us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BerwynIlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,126,150us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BerwynIlMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 25,430us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BerwynIlMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2013      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Grand Forks, ND [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GrandForksNdMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 1,502,609us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GrandForksNdMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 2,301,337us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GrandForksNdMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 1,801,028us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GrandForksNdMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 1,502,609us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GrandForksNdMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 4,102,365us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GrandForksNdMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 5,604,974us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GrandForksNdMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 112,148us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GrandForksNdMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2013      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Ann Arbor, MI 2 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AnnArborMi2Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 3,000,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AnnArborMi2Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 4,595,757us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AnnArborMi2Member
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 276,163us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AnnArborMi2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 3,000,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AnnArborMi2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 4,871,920us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AnnArborMi2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 7,871,920us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AnnArborMi2Member
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 131,372us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AnnArborMi2Member
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2013      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Joplin, MO [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JoplinMoMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 1,208,225us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JoplinMoMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,160,843us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JoplinMoMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JoplinMoMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 1,208,225us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JoplinMoMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,160,843us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JoplinMoMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 2,369,068us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JoplinMoMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 33,858us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JoplinMoMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2013      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Red Bay, AL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RedBayAlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 38,981us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RedBayAlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 2,528,437us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RedBayAlMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RedBayAlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 38,981us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RedBayAlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,528,437us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RedBayAlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 2,567,418us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RedBayAlMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 10,535us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RedBayAlMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Birmingham, AL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BirminghamAlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 230,106us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BirminghamAlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 231,313us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BirminghamAlMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BirminghamAlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 230,106us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BirminghamAlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 231,313us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BirminghamAlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 461,419us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BirminghamAlMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 482us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BirminghamAlMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Birmingham, AL 2 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BirminghamAl2Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 245,234us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BirminghamAl2Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 251,339us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BirminghamAl2Member
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BirminghamAl2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 245,234us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BirminghamAl2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 251,339us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BirminghamAl2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 496,573us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BirminghamAl2Member
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 524us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BirminghamAl2Member
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Birmingham, AL 3 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BirminghamAl3Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 98,271us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BirminghamAl3Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 179,824us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BirminghamAl3Member
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BirminghamAl3Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 98,271us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BirminghamAl3Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 179,824us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BirminghamAl3Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 278,095us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BirminghamAl3Member
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 375us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BirminghamAl3Member
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Birmingham, AL 4 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BirminghamAl4Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 235,641us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BirminghamAl4Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 127,477us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BirminghamAl4Member
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BirminghamAl4Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 235,641us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BirminghamAl4Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 127,477us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BirminghamAl4Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 363,118us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BirminghamAl4Member
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 266us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BirminghamAl4Member
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Montgomery, AL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MontgomeryAlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 325,389us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MontgomeryAlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 217,850us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MontgomeryAlMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MontgomeryAlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 325,389us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MontgomeryAlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 217,850us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MontgomeryAlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 543,239us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MontgomeryAlMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 454us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MontgomeryAlMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Littleton, CO [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 5,595,327us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LittletonCoMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 819,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LittletonCoMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 8,756,266us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LittletonCoMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LittletonCoMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 819,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LittletonCoMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 8,756,266us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LittletonCoMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 9,575,266us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LittletonCoMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 54,727us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LittletonCoMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
St Petersburg, FL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_StPetersburgFlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 1,225,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_StPetersburgFlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,025,247us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_StPetersburgFlMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_StPetersburgFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 1,225,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_StPetersburgFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,025,247us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_StPetersburgFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 2,250,247us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_StPetersburgFlMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 19,223us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_StPetersburgFlMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
St Augustine, FL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_StAugustineFlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 200,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_StAugustineFlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,523,230us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_StAugustineFlMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_StAugustineFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 200,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_StAugustineFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,523,230us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_StAugustineFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,723,230us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_StAugustineFlMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 9,520us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_StAugustineFlMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
East Palatka, FL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_EastPalatkaFlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 730,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_EastPalatkaFlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 575,236us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_EastPalatkaFlMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_EastPalatkaFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 730,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_EastPalatkaFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 575,236us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_EastPalatkaFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,305,236us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_EastPalatkaFlMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 3,595us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_EastPalatkaFlMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Pensacola, FL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PensacolaFlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 136,365us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PensacolaFlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 398,773us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PensacolaFlMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PensacolaFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 136,365us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PensacolaFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 398,773us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PensacolaFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 535,138us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PensacolaFlMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 831us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PensacolaFlMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Jacksonville, FL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JacksonvilleFlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 297,066us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JacksonvilleFlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 312,818us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JacksonvilleFlMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JacksonvilleFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 297,066us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JacksonvilleFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 312,818us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JacksonvilleFlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 609,884us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JacksonvilleFlMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JacksonvilleFlMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Jacksonville, FL 2 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JacksonvilleFl2Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 299,312us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JacksonvilleFl2Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 348,862us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JacksonvilleFl2Member
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JacksonvilleFl2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 299,312us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JacksonvilleFl2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 348,862us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JacksonvilleFl2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 648,174us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JacksonvilleFl2Member
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JacksonvilleFl2Member
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Fort Oglethorpe, GA [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FortOglethorpeGaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 1,842,240us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FortOglethorpeGaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 2,844,126us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FortOglethorpeGaMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FortOglethorpeGaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 1,842,240us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FortOglethorpeGaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,844,126us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FortOglethorpeGaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 4,686,366us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FortOglethorpeGaMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 65,178us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FortOglethorpeGaMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
New Lenox, IL 2 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NewLenoxIl2Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 2,010,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NewLenoxIl2Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 6,206,252us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NewLenoxIl2Member
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NewLenoxIl2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 2,010,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NewLenoxIl2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 6,206,252us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NewLenoxIl2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 8,216,252us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NewLenoxIl2Member
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 34,234us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NewLenoxIl2Member
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Rockford, IL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RockfordIlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 303,395us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RockfordIlMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 2,436,873us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RockfordIlMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RockfordIlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 303,395us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RockfordIlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,436,873us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RockfordIlMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 2,740,268us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RockfordIlMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 15,230us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RockfordIlMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Indianapolis, IN 2 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_IndianapolisIn2Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 575,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_IndianapolisIn2Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,871,110us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_IndianapolisIn2Member
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_IndianapolisIn2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 575,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_IndianapolisIn2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,871,110us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_IndianapolisIn2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 2,446,110us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_IndianapolisIn2Member
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 35,083us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_IndianapolisIn2Member
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Terre Haute, IN [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_TerreHauteInMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 103,147us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_TerreHauteInMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 2,477,263us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_TerreHauteInMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_TerreHauteInMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 103,147us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_TerreHauteInMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,477,263us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_TerreHauteInMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 2,580,410us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_TerreHauteInMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_TerreHauteInMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Junction City, KS [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JunctionCityKsMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 78,271us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JunctionCityKsMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 2,504,294us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JunctionCityKsMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JunctionCityKsMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 78,271us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JunctionCityKsMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,504,294us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JunctionCityKsMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 2,582,565us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JunctionCityKsMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JunctionCityKsMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Baton Rouge, LA 3 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BatonRougeLa3Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 226,919us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BatonRougeLa3Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 347,691us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BatonRougeLa3Member
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BatonRougeLa3Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 226,919us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BatonRougeLa3Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 347,691us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BatonRougeLa3Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 574,610us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BatonRougeLa3Member
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 724us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BatonRougeLa3Member
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Lincoln Park, MI [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LincolnParkMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 543,303us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LincolnParkMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,408,544us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LincolnParkMiMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LincolnParkMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 543,303us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LincolnParkMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,408,544us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LincolnParkMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,951,847us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LincolnParkMiMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 26,410us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LincolnParkMiMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Novi, MI [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NoviMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 1,803,857us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NoviMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,488,505us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NoviMiMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NoviMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 1,803,857us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NoviMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,488,505us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NoviMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 3,292,362us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NoviMiMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NoviMiMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Bloomfield Hills, MI [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BloomfieldHillsMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 1,340,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BloomfieldHillsMiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 2,003,406us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BloomfieldHillsMiMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BloomfieldHillsMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 1,340,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BloomfieldHillsMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,003,406us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BloomfieldHillsMiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 3,343,406us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BloomfieldHillsMiMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 6,966us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BloomfieldHillsMiMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Moreahead, MN [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MoreaheadMnMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 511,645us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MoreaheadMnMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 870,732us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MoreaheadMnMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MoreaheadMnMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 511,645us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MoreaheadMnMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 870,732us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MoreaheadMnMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,382,377us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MoreaheadMnMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 3,628us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MoreaheadMnMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Fergus Falls, MN [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FergusFallsMnMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 405,617us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FergusFallsMnMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 561,332us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FergusFallsMnMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FergusFallsMnMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 405,617us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FergusFallsMnMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 561,332us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FergusFallsMnMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 966,949us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FergusFallsMnMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 2,339us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FergusFallsMnMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Fergus Falls, MN 2 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FergusFallsMn2Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 327,247us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FergusFallsMn2Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 655,973us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FergusFallsMn2Member
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FergusFallsMn2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 327,247us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FergusFallsMn2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 655,973us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FergusFallsMn2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 983,220us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FergusFallsMn2Member
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 2,733us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FergusFallsMn2Member
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Park Rapids, MN [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ParkRapidsMnMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 413,151us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ParkRapidsMnMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 706,884us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ParkRapidsMnMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ParkRapidsMnMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 413,151us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ParkRapidsMnMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 706,884us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ParkRapidsMnMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,120,035us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ParkRapidsMnMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 2,945us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ParkRapidsMnMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Jackson, MS [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JacksonMsMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 256,789us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JacksonMsMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 172,184us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JacksonMsMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JacksonMsMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 256,789us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JacksonMsMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 172,184us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JacksonMsMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 428,973us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JacksonMsMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 359us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JacksonMsMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Belton, MO [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BeltonMoMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 714,775us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BeltonMoMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 7,173,999us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BeltonMoMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BeltonMoMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 714,775us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BeltonMoMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 7,173,999us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BeltonMoMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 7,888,774us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BeltonMoMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BeltonMoMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Great Falls, MT [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GreatFallsMtMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 945,765us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GreatFallsMtMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 753,222us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GreatFallsMtMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GreatFallsMtMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 945,765us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GreatFallsMtMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 753,222us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GreatFallsMtMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,698,987us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GreatFallsMtMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GreatFallsMtMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Irvington, NJ [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_IrvingtonNjMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 315,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_IrvingtonNjMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,313,025us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_IrvingtonNjMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_IrvingtonNjMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 315,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_IrvingtonNjMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,313,025us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_IrvingtonNjMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,628,025us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_IrvingtonNjMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 24,619us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_IrvingtonNjMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
East Grand Forks, ND [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_EastGrandForksNdMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 313,454us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_EastGrandForksNdMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 914,676us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_EastGrandForksNdMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_EastGrandForksNdMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 313,454us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_EastGrandForksNdMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 914,676us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_EastGrandForksNdMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,228,130us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_EastGrandForksNdMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 3,811us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_EastGrandForksNdMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Fargo, ND [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FargoNdMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 513,505us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FargoNdMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,201,532us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FargoNdMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FargoNdMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 513,505us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FargoNdMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,201,532us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FargoNdMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,715,037us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FargoNdMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 5,006us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FargoNdMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Fargo, ND 2 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FargoNd2Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 629,484us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FargoNd2Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 707,799us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FargoNd2Member
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FargoNd2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 629,484us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FargoNd2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 707,799us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FargoNd2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,337,283us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FargoNd2Member
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 2,949us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_FargoNd2Member
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Jamestown, ND [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JamestownNdMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 234,545us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JamestownNdMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,158,486us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JamestownNdMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JamestownNdMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 234,545us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JamestownNdMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,158,486us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JamestownNdMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,393,031us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JamestownNdMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 4,827us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_JamestownNdMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Grand Forks, ND 2 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GrandForksNd2Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 540,658us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GrandForksNd2Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 813,776us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GrandForksNd2Member
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GrandForksNd2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 540,658us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GrandForksNd2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 813,776us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GrandForksNd2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,354,434us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GrandForksNd2Member
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 3,391us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GrandForksNd2Member
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Grand Forks, ND 3 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GrandForksNd3Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 762,471us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GrandForksNd3Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 554,595us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GrandForksNd3Member
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GrandForksNd3Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 762,471us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GrandForksNd3Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 554,595us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GrandForksNd3Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,317,066us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GrandForksNd3Member
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 2,311us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GrandForksNd3Member
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Grand Forks, ND 4 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GrandForksNd4Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 529,087us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GrandForksNd4Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 676,026us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GrandForksNd4Member
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GrandForksNd4Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 529,087us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GrandForksNd4Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 676,026us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GrandForksNd4Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,205,113us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GrandForksNd4Member
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 2,817us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GrandForksNd4Member
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Toledo, OH [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ToledoOhMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 500,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ToledoOhMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,372,363us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ToledoOhMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ToledoOhMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 500,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ToledoOhMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,372,363us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ToledoOhMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,872,363us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ToledoOhMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 25,732us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ToledoOhMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Toledo, OH 2 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ToledoOh2Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 155,250us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ToledoOh2Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 762,500us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ToledoOh2Member
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ToledoOh2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 155,250us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ToledoOh2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 762,500us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ToledoOh2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 917,750us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ToledoOh2Member
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 7,943us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ToledoOh2Member
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Toledo, OH 3 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ToledoOh3Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 213,750us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ToledoOh3Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 754,675us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ToledoOh3Member
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ToledoOh3Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 213,750us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ToledoOh3Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 754,675us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ToledoOh3Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 968,425us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ToledoOh3Member
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 7,861us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ToledoOh3Member
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Toledo, OH 4 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ToledoOh4Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 168,750us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ToledoOh4Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 785,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ToledoOh4Member
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ToledoOh4Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 168,750us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ToledoOh4Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 785,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ToledoOh4Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 953,750us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ToledoOh4Member
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 8,177us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ToledoOh4Member
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Port Clinton, OH [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PortClintonOhMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 75,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PortClintonOhMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 721,100us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PortClintonOhMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PortClintonOhMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 75,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PortClintonOhMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 721,100us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PortClintonOhMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 796,100us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PortClintonOhMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 7,511us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_PortClintonOhMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Mansfield, OH [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MansfieldOhMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 306,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MansfieldOhMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 725,600us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MansfieldOhMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MansfieldOhMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 306,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MansfieldOhMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 725,600us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MansfieldOhMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,031,600us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MansfieldOhMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 7,558us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MansfieldOhMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Orville, OH [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_OrvilleOhMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 344,250us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_OrvilleOhMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 716,600us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_OrvilleOhMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_OrvilleOhMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 344,250us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_OrvilleOhMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 716,600us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_OrvilleOhMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,060,850us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_OrvilleOhMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 7,465us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_OrvilleOhMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Akron, OH [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AkronOhMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 427,750us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AkronOhMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 715,700us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AkronOhMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AkronOhMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 427,750us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AkronOhMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 715,700us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AkronOhMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,143,450us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AkronOhMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 7,455us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AkronOhMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Akron, OH 2 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AkronOh2Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 696,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AkronOh2Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 845,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AkronOh2Member
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AkronOh2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 696,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AkronOh2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 845,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AkronOh2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,541,000us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AkronOh2Member
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 8,802us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AkronOh2Member
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Hubbard, OH [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_HubbardOhMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 204,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_HubbardOhMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 726,500us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_HubbardOhMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_HubbardOhMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 204,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_HubbardOhMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 726,500us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_HubbardOhMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 930,500us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_HubbardOhMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 7,568us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_HubbardOhMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Youngstown, OH [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_YoungstownOhMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 285,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_YoungstownOhMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 745,700us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_YoungstownOhMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_YoungstownOhMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 285,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_YoungstownOhMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 745,700us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_YoungstownOhMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,030,700us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_YoungstownOhMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 7,768us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_YoungstownOhMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Calcutta, OH [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CalcuttaOhMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 208,050us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CalcuttaOhMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 758,750us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CalcuttaOhMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CalcuttaOhMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 208,050us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CalcuttaOhMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 758,750us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CalcuttaOhMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 966,800us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CalcuttaOhMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 7,904us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_CalcuttaOhMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Columbus, OH [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ColumbusOhMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 0us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ColumbusOhMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,136,250us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ColumbusOhMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ColumbusOhMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 0us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ColumbusOhMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,136,250us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ColumbusOhMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,136,250us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ColumbusOhMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 9,469us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ColumbusOhMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Tulsa, OK [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_TulsaOkMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 459,148us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_TulsaOkMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 640,550us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_TulsaOkMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_TulsaOkMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 459,148us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_TulsaOkMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 640,550us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_TulsaOkMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,099,698us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_TulsaOkMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 13,345us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_TulsaOkMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Ligonier, PA [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LigonierPaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 330,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LigonierPaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 5,021,849us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LigonierPaMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LigonierPaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 330,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LigonierPaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 5,021,849us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LigonierPaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 5,351,849us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LigonierPaMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 52,311us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LigonierPaMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Clarion, PA [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ClarionPaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 121,200us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ClarionPaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 771,500us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ClarionPaMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ClarionPaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 121,200us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ClarionPaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 771,500us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ClarionPaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 892,700us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ClarionPaMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 8,036us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ClarionPaMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Mercer, PA [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MercerPaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 121,200us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MercerPaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 770,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MercerPaMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MercerPaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 121,200us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MercerPaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 770,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MercerPaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 891,200us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MercerPaMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 8,021us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MercerPaMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Limerick, PA [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LimerickPaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 369,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LimerickPaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 0us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LimerickPaMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LimerickPaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 369,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LimerickPaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 0us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LimerickPaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 369,000us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LimerickPaMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_LimerickPaMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Harrisbuarg, PA [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_HarrisbuargPaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 124,757us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_HarrisbuargPaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,446,773us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_HarrisbuargPaMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_HarrisbuargPaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 124,757us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_HarrisbuargPaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,446,773us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_HarrisbuargPaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,571,530us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_HarrisbuargPaMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_HarrisbuargPaMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Andreson, SC [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AndresonScMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 781,200us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AndresonScMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 4,441,535us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AndresonScMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AndresonScMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 781,200us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AndresonScMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 4,441,535us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AndresonScMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 5,222,735us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AndresonScMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 101,785us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AndresonScMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Easley, SC [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_EasleyScMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 332,275us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_EasleyScMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 268,612us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_EasleyScMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_EasleyScMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 332,275us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_EasleyScMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 268,612us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_EasleyScMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 600,887us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_EasleyScMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 560us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_EasleyScMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Spartanburg, SC 2 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SpartanburgSc2Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 141,307us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SpartanburgSc2Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 446,706us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SpartanburgSc2Member
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SpartanburgSc2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 141,307us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SpartanburgSc2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 446,706us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SpartanburgSc2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 588,013us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SpartanburgSc2Member
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 931us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SpartanburgSc2Member
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Spartanburg, SC 3 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SpartanburgSc3Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 94,770us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SpartanburgSc3Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 261,640us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SpartanburgSc3Member
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SpartanburgSc3Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 94,770us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SpartanburgSc3Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 261,640us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SpartanburgSc3Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 356,410us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SpartanburgSc3Member
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 545us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SpartanburgSc3Member
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Columbia, SC [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ColumbiaScMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 303,932us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ColumbiaScMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,221,964us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ColumbiaScMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ColumbiaScMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 303,932us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ColumbiaScMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,221,964us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ColumbiaScMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,525,896us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ColumbiaScMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 2,546us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ColumbiaScMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Alcoa, TN [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AlcoaTnMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 329,074us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AlcoaTnMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 270,719us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AlcoaTnMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AlcoaTnMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 329,074us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AlcoaTnMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 270,719us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AlcoaTnMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 599,793us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AlcoaTnMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 564us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AlcoaTnMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Knoxville, TN [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_KnoxvilleTnMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 214,077us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_KnoxvilleTnMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 286,037us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_KnoxvilleTnMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_KnoxvilleTnMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 214,077us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_KnoxvilleTnMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 286,037us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_KnoxvilleTnMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 500,114us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_KnoxvilleTnMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 596us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_KnoxvilleTnMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Red Bank, TN [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RedBankTnMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 229,100us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RedBankTnMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 302,146us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RedBankTnMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RedBankTnMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 229,100us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RedBankTnMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 302,146us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RedBankTnMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 531,246us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RedBankTnMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 629us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_RedBankTnMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
New Tazewell, TN [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NewTazewellTnMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 91,006us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NewTazewellTnMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 328,561us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NewTazewellTnMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NewTazewellTnMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 91,006us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NewTazewellTnMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 328,561us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NewTazewellTnMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 419,567us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NewTazewellTnMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_NewTazewellTnMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Maryville, TN [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MaryvilleTnMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 94,682us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MaryvilleTnMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,529,621us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MaryvilleTnMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MaryvilleTnMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 94,682us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MaryvilleTnMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,529,621us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MaryvilleTnMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,624,303us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MaryvilleTnMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MaryvilleTnMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Morristown, TN [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MorristownTnMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 46,404us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MorristownTnMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 801,506us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MorristownTnMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MorristownTnMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 46,404us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MorristownTnMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 801,506us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MorristownTnMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 847,910us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MorristownTnMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MorristownTnMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Clinton, TN [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ClintonTnMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 69,625us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ClintonTnMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,177,927us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ClintonTnMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ClintonTnMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 69,625us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ClintonTnMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,177,927us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ClintonTnMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,247,552us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ClintonTnMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ClintonTnMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Knoxville, TN 2 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_KnoxvilleTn2Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 160,057us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_KnoxvilleTn2Member
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 2,265,025us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_KnoxvilleTn2Member
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_KnoxvilleTn2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 160,057us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_KnoxvilleTn2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,265,025us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_KnoxvilleTn2Member
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 2,425,082us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_KnoxvilleTn2Member
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_KnoxvilleTn2Member
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Sweetwater, TN [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SweetwaterTnMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 79,100us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SweetwaterTnMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,009,290us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SweetwaterTnMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SweetwaterTnMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 79,100us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SweetwaterTnMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,009,290us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SweetwaterTnMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,088,390us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SweetwaterTnMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SweetwaterTnMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
McKinney, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MckinneyTxMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 2,671,020us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MckinneyTxMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 6,785,815us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MckinneyTxMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MckinneyTxMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 2,671,020us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MckinneyTxMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 6,785,815us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MckinneyTxMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 9,456,835us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MckinneyTxMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 84,823us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MckinneyTxMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Forest Va [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ForestVaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 282,600us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ForestVaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 956,027us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ForestVaMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ForestVaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 282,600us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ForestVaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 956,027us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ForestVaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,238,627us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ForestVaMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 17,926us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ForestVaMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Waynesboro, VA [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WaynesboroVaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 292,086us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WaynesboroVaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 514,209us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WaynesboroVaMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WaynesboroVaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 292,086us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WaynesboroVaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 514,209us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WaynesboroVaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 806,295us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WaynesboroVaMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 1,071us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WaynesboroVaMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Colonial Heights, VA [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ColonialHeightsVaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 547,692us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ColonialHeightsVaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,059,557us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ColonialHeightsVaMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ColonialHeightsVaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 547,692us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ColonialHeightsVaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,059,557us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ColonialHeightsVaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,607,249us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ColonialHeightsVaMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 2,207us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ColonialHeightsVaMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Chester, VA [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ChesterVaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 300,583us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ChesterVaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 794,417us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ChesterVaMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ChesterVaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 300,583us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ChesterVaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 794,417us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ChesterVaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,095,000us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ChesterVaMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 1,655us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_ChesterVaMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Midlothian, VA [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MidlothianVaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 232,337us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MidlothianVaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 802,602us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MidlothianVaMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MidlothianVaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 232,337us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MidlothianVaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 802,602us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MidlothianVaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,034,939us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MidlothianVaMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 1,672us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MidlothianVaMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Ashland, VA [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AshlandVaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 426,396us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AshlandVaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 965,925us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AshlandVaMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AshlandVaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 426,396us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AshlandVaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 965,925us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AshlandVaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,392,321us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AshlandVaMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 2,012us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_AshlandVaMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Mecanicsville, VA [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MecanicsvilleVaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 219,496us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MecanicsvilleVaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 906,590us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MecanicsvilleVaMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MecanicsvilleVaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 219,496us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MecanicsvilleVaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 906,590us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MecanicsvilleVaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,126,086us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MecanicsvilleVaMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 1,889us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_MecanicsvilleVaMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Glen Allen, VA [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GlenAllenVaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 590,101us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GlenAllenVaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,129,495us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GlenAllenVaMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GlenAllenVaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 590,101us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GlenAllenVaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,129,495us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GlenAllenVaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 1,719,596us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GlenAllenVaMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 2,353us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_GlenAllenVaMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Burlington, WA [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BurlingtonWaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 610,000us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BurlingtonWaMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 3,647,279us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BurlingtonWaMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BurlingtonWaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 610,000us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BurlingtonWaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,647,279us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BurlingtonWaMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 4,257,279us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BurlingtonWaMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 8,869us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_BurlingtonWaMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Wausau, WI [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WausauWiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 909,092us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WausauWiMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 1,405,899us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WausauWiMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WausauWiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 909,092us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WausauWiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,405,899us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WausauWiMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 2,314,991us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WausauWiMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 17,588us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_WausauWiMember
     
Real Estate and Accumulated Depreciation, Date of Acquisition 2014      
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 40 years      
Sub Total [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 106,762,238us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SubTotalMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 197,046,698us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SubTotalMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 376,435,573us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SubTotalMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 15,435,489us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SubTotalMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 195,091,303us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SubTotalMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 393,826,467us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SubTotalMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 588,917,770us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SubTotalMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 59,089,851us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SubTotalMember
     
Property Under Development [Member] | Various [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ adc_FacilitiesAxis
= adc_PropertyUnderDevelopmentMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_VariousMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 0us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ adc_FacilitiesAxis
= adc_PropertyUnderDevelopmentMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_VariousMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 229,242us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ adc_FacilitiesAxis
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/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_VariousMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ adc_FacilitiesAxis
= adc_PropertyUnderDevelopmentMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_VariousMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 0us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ adc_FacilitiesAxis
= adc_PropertyUnderDevelopmentMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_VariousMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 229,242us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ adc_FacilitiesAxis
= adc_PropertyUnderDevelopmentMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_VariousMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 229,242us-gaap_RealEstateGrossAtCarryingValue
/ adc_FacilitiesAxis
= adc_PropertyUnderDevelopmentMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_VariousMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation 0us-gaap_RealEstateAccumulatedDepreciation
/ adc_FacilitiesAxis
= adc_PropertyUnderDevelopmentMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_VariousMember
     
Real Estate and Accumulated Depreciation, Life on Which Depreciation in Latest Income Statement is Computed 0 years      
Property Under Development [Member] | Sub Total [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Real Estate and Accumulated Depreciation, Encumbrances 0us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
/ adc_FacilitiesAxis
= adc_PropertyUnderDevelopmentMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SubTotalMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Land 0us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ adc_FacilitiesAxis
= adc_PropertyUnderDevelopmentMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SubTotalMember
     
Real Estate and Accumulated Depreciation, Initial Cost, Buildings and Improvements 229,242us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ adc_FacilitiesAxis
= adc_PropertyUnderDevelopmentMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SubTotalMember
     
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition 0us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ adc_FacilitiesAxis
= adc_PropertyUnderDevelopmentMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SubTotalMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Land 0us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ adc_FacilitiesAxis
= adc_PropertyUnderDevelopmentMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SubTotalMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Buildings and Improvements 229,242us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ adc_FacilitiesAxis
= adc_PropertyUnderDevelopmentMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SubTotalMember
     
Real Estate and Accumulated Depreciation, Gross Amount at Which Carried at Close of Period, Total 229,242us-gaap_RealEstateGrossAtCarryingValue
/ adc_FacilitiesAxis
= adc_PropertyUnderDevelopmentMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SubTotalMember
     
Real Estate and Accumulated Depreciation, Accumulated Depreciation $ 0us-gaap_RealEstateAccumulatedDepreciation
/ adc_FacilitiesAxis
= adc_PropertyUnderDevelopmentMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= adc_SubTotalMember