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CONSOLIDATED BALANCE SHEETS [Parenthetical] (USD $) | Mar. 31, 2015 | Dec. 31, 2014
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Allowance for doubtful accounts receivable (in dollars) | $ 35,000 us-gaap_AllowanceForDoubtfulAccountsReceivable | $ 35,000 us-gaap_AllowanceForDoubtfulAccountsReceivable
Deferred financing costs, accumulated amortization (in dollars) | 2,887,984 us-gaap_AccumulatedAmortizationDeferredFinanceCosts | 2,690,005 us-gaap_AccumulatedAmortizationDeferredFinanceCosts
Deferred leasing costs, accumulated amortization (in dollars) | 573,311 us-gaap_DeferredCostsLeasingAccumulatedAmortization | 543,957 us-gaap_DeferredCostsLeasingAccumulatedAmortization
Finite-lived intangible assets, accumulated amortization (in dollars) | $ 6,671,752 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization | $ 5,719,085 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
Common stock, par value (in dollars per share) | $ 0.0001 us-gaap_CommonStockParOrStatedValuePerShare | $ 0.0001 us-gaap_CommonStockParOrStatedValuePerShare
Common stock, shares authorized | 28,000,000 us-gaap_CommonStockSharesAuthorized | 28,000,000 us-gaap_CommonStockSharesAuthorized
Common stock, shares, issued | 17,602,615 us-gaap_CommonStockSharesIssued | 17,539,946 us-gaap_CommonStockSharesIssued
Common stock, shares, outstanding | 17,602,615 us-gaap_CommonStockSharesOutstanding | 17,539,946 us-gaap_CommonStockSharesOutstanding
Excess stock, par value (in dollars per share) | $ 0.0001 adc_ExcessStockParOrStatedValuePerShare | $ 0.0001 adc_ExcessStockParOrStatedValuePerShare
Excess stock, shares authorized | 8,000,000 us-gaap_ExcessStockSharesAuthorized | 8,000,000 us-gaap_ExcessStockSharesAuthorized
Excess stock, shares issued | 0 us-gaap_ExcessStockSharesIssued | 0 us-gaap_ExcessStockSharesIssued
Excess stock, shares outstanding | 0 us-gaap_ExcessStockSharesOutstanding | 0 us-gaap_ExcessStockSharesOutstanding
Preferred stock, par value (in dollars per share) | $ 0.0001 us-gaap_PreferredStockParOrStatedValuePerShare | $ 0.0001 us-gaap_PreferredStockParOrStatedValuePerShare
Preferred stock, shares authorized | 4,000,000 us-gaap_PreferredStockSharesAuthorized | 4,000,000 us-gaap_PreferredStockSharesAuthorized
Series A Junior Participating Preferred Stock [Member] |  |
Preferred stock, par value (in dollars per share) | $ 0.0001 us-gaap_PreferredStockParOrStatedValuePerShare / us-gaap_StatementClassOfStockAxis = adc_SeriesJuniorParticipatingPreferredStockMember | $ 0.0001 us-gaap_PreferredStockParOrStatedValuePerShare / us-gaap_StatementClassOfStockAxis = adc_SeriesJuniorParticipatingPreferredStockMember
Preferred stock, shares authorized | 200,000 us-gaap_PreferredStockSharesAuthorized / us-gaap_StatementClassOfStockAxis = adc_SeriesJuniorParticipatingPreferredStockMember | 200,000 us-gaap_PreferredStockSharesAuthorized / us-gaap_StatementClassOfStockAxis = adc_SeriesJuniorParticipatingPreferredStockMember
Preferred stock, shares issued | 0 us-gaap_PreferredStockSharesIssued / us-gaap_StatementClassOfStockAxis = adc_SeriesJuniorParticipatingPreferredStockMember | 0 us-gaap_PreferredStockSharesIssued / us-gaap_StatementClassOfStockAxis = adc_SeriesJuniorParticipatingPreferredStockMember
Preferred stock, shares outstanding | 0 us-gaap_PreferredStockSharesOutstanding / us-gaap_StatementClassOfStockAxis = adc_SeriesJuniorParticipatingPreferredStockMember | 0 us-gaap_PreferredStockSharesOutstanding / us-gaap_StatementClassOfStockAxis = adc_SeriesJuniorParticipatingPreferredStockMember

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