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STOCK BASED COMPENSATION (Details) (USD $)
0 Months Ended 12 Months Ended 3 Months Ended 1 Months Ended 0 Months Ended 1 Months Ended 3 Months Ended
Dec. 31, 2014
Dec. 31, 2014
Dec. 31, 2013
Sep. 30, 2014
Oct. 31, 2014
Dec. 31, 2013
Dec. 17, 2014
Oct. 10, 2014
Jun. 30, 2013
Dec. 31, 2014
Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Total Compensation Expense $ 10,000us-gaap_AllocatedShareBasedCompensationExpense $ 1,155,000us-gaap_AllocatedShareBasedCompensationExpense $ 1,097,000us-gaap_AllocatedShareBasedCompensationExpense                
Additional disclosure                      
Number of securities remaining available for future issuance 471,526us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant 471,526us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant               471,526us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant  
Weighted average grant date fair value of options granted (in dollars per share)   $ 1.61us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue $ 1.92us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue                
Unrecognized compensation expense 400,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions 400,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions               400,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions  
Period of recognition of compensation expense   2 years 0 months 21 days                  
Total intrinsic value of options exercised   100,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue 20,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue                
Restriction period   3 years                  
2005 plan                      
Additional disclosure                      
Maximum number of shares of the company's stock that may be issued 578,812us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_PlanNameAxis
= adk_EmployeeStockOption2005PlanMember
578,812us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_PlanNameAxis
= adk_EmployeeStockOption2005PlanMember
              578,812us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_PlanNameAxis
= adk_EmployeeStockOption2005PlanMember
 
2011 plan                      
Additional disclosure                      
Number of employee stock option plans   3adk_SharebasedCompensationArrangementBySharebasedPaymentAwardNumberOfPlans
/ us-gaap_PlanNameAxis
= adk_EmployeeStockOption2011PlanMember
                 
Maximum number of shares of the company's stock that may be issued 2,152,500us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_PlanNameAxis
= adk_EmployeeStockOption2011PlanMember
2,152,500us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_PlanNameAxis
= adk_EmployeeStockOption2011PlanMember
              2,152,500us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_PlanNameAxis
= adk_EmployeeStockOption2011PlanMember
 
Employee                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Total Compensation Expense   593,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_TitleOfIndividualAxis
= adk_EmployeeMember
  690,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_TitleOfIndividualAxis
= adk_EmployeeMember
             
Weighted average significant assumptions used to estimate the fair value                      
Dividend Yield (as a percent)   0.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
/ us-gaap_TitleOfIndividualAxis
= adk_EmployeeMember
0.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
/ us-gaap_TitleOfIndividualAxis
= adk_EmployeeMember
               
Nonemployee                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Total Compensation Expense   562,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_TitleOfIndividualAxis
= adk_NonemployeeMember
407,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_TitleOfIndividualAxis
= adk_NonemployeeMember
               
Warrant | Employee                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Total Compensation Expense   149,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_WarrantMember
/ us-gaap_TitleOfIndividualAxis
= adk_EmployeeMember
  140,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_WarrantMember
/ us-gaap_TitleOfIndividualAxis
= adk_EmployeeMember
             
Weighted average significant assumptions used to estimate the fair value                      
Expected Volatility (as a percent)   40.90%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_WarrantMember
/ us-gaap_TitleOfIndividualAxis
= adk_EmployeeMember
43.30%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_WarrantMember
/ us-gaap_TitleOfIndividualAxis
= adk_EmployeeMember
               
Risk-Free Interest Rate (as a percent)   0.89%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_WarrantMember
/ us-gaap_TitleOfIndividualAxis
= adk_EmployeeMember
0.12%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_WarrantMember
/ us-gaap_TitleOfIndividualAxis
= adk_EmployeeMember
               
Additional disclosure                      
Weighted average grant date fair value of options granted (in dollars per share)   $ 1.68us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_WarrantMember
/ us-gaap_TitleOfIndividualAxis
= adk_EmployeeMember
$ 3.06us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_WarrantMember
/ us-gaap_TitleOfIndividualAxis
= adk_EmployeeMember
               
Unrecognized compensation expense 500,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_WarrantMember
/ us-gaap_TitleOfIndividualAxis
= adk_EmployeeMember
500,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_WarrantMember
/ us-gaap_TitleOfIndividualAxis
= adk_EmployeeMember
              500,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_WarrantMember
/ us-gaap_TitleOfIndividualAxis
= adk_EmployeeMember
 
Period of recognition of compensation expense   2 years 9 months 10 days                  
Warrants granted (in dollars per share)   $ 4.49adk_ClassOfWarrantOrRightIssuedWeightedAverageExercisePrice
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_WarrantMember
/ us-gaap_TitleOfIndividualAxis
= adk_EmployeeMember
$ 5.90adk_ClassOfWarrantOrRightIssuedWeightedAverageExercisePrice
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_WarrantMember
/ us-gaap_TitleOfIndividualAxis
= adk_EmployeeMember
               
Warrant | Nonemployee                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Total Compensation Expense   11,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_WarrantMember
/ us-gaap_TitleOfIndividualAxis
= adk_NonemployeeMember
22,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_WarrantMember
/ us-gaap_TitleOfIndividualAxis
= adk_NonemployeeMember
               
Weighted average significant assumptions used to estimate the fair value                      
Dividend Yield (as a percent)   0.00%us-gaap_FairValueAssumptionsExpectedDividendRate
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_WarrantMember
/ us-gaap_TitleOfIndividualAxis
= adk_NonemployeeMember
0.00%us-gaap_FairValueAssumptionsExpectedDividendRate
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_WarrantMember
/ us-gaap_TitleOfIndividualAxis
= adk_NonemployeeMember
               
Additional disclosure                      
Unrecognized compensation expense 300,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_WarrantMember
/ us-gaap_TitleOfIndividualAxis
= adk_NonemployeeMember
300,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_WarrantMember
/ us-gaap_TitleOfIndividualAxis
= adk_NonemployeeMember
              300,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_WarrantMember
/ us-gaap_TitleOfIndividualAxis
= adk_NonemployeeMember
 
Period of recognition of compensation expense   1 year 11 months 23 days                  
Total intrinsic value of options exercised   800,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_WarrantMember
/ us-gaap_TitleOfIndividualAxis
= adk_NonemployeeMember
100,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_WarrantMember
/ us-gaap_TitleOfIndividualAxis
= adk_NonemployeeMember
               
Warrants granted (in dollars per share)   $ 4.12adk_ClassOfWarrantOrRightIssuedWeightedAverageExercisePrice
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_WarrantMember
/ us-gaap_TitleOfIndividualAxis
= adk_NonemployeeMember
$ 3.96adk_ClassOfWarrantOrRightIssuedWeightedAverageExercisePrice
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_WarrantMember
/ us-gaap_TitleOfIndividualAxis
= adk_NonemployeeMember
               
Weighted average grant date fair value $ 1.48us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_WarrantMember
/ us-gaap_TitleOfIndividualAxis
= adk_NonemployeeMember
$ 1.48us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_WarrantMember
/ us-gaap_TitleOfIndividualAxis
= adk_NonemployeeMember
$ 1.14us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_WarrantMember
/ us-gaap_TitleOfIndividualAxis
= adk_NonemployeeMember
    1.14us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_WarrantMember
/ us-gaap_TitleOfIndividualAxis
= adk_NonemployeeMember
      $ 1.48us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_WarrantMember
/ us-gaap_TitleOfIndividualAxis
= adk_NonemployeeMember
 
Warrant | Nonemployee | Minimum                      
Weighted average significant assumptions used to estimate the fair value                      
Expected Volatility (as a percent)   38.90%us-gaap_FairValueAssumptionsExpectedVolatilityRate
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_WarrantMember
/ us-gaap_TitleOfIndividualAxis
= adk_NonemployeeMember
46.90%us-gaap_FairValueAssumptionsExpectedVolatilityRate
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_WarrantMember
/ us-gaap_TitleOfIndividualAxis
= adk_NonemployeeMember
               
Risk-Free Interest Rate (as a percent)   0.73%us-gaap_FairValueAssumptionsRiskFreeInterestRate
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_WarrantMember
/ us-gaap_TitleOfIndividualAxis
= adk_NonemployeeMember
0.07%us-gaap_FairValueAssumptionsRiskFreeInterestRate
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_WarrantMember
/ us-gaap_TitleOfIndividualAxis
= adk_NonemployeeMember
               
Expected Term   2 years 2 years                
Additional disclosure                      
Warrant expiration term   2 years                  
Warrant | Nonemployee | Maximum                      
Weighted average significant assumptions used to estimate the fair value                      
Expected Volatility (as a percent)   39.70%us-gaap_FairValueAssumptionsExpectedVolatilityRate
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_WarrantMember
/ us-gaap_TitleOfIndividualAxis
= adk_NonemployeeMember
50.30%us-gaap_FairValueAssumptionsExpectedVolatilityRate
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_WarrantMember
/ us-gaap_TitleOfIndividualAxis
= adk_NonemployeeMember
               
Risk-Free Interest Rate (as a percent)   1.06%us-gaap_FairValueAssumptionsRiskFreeInterestRate
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_WarrantMember
/ us-gaap_TitleOfIndividualAxis
= adk_NonemployeeMember
0.32%us-gaap_FairValueAssumptionsRiskFreeInterestRate
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_WarrantMember
/ us-gaap_TitleOfIndividualAxis
= adk_NonemployeeMember
               
Expected Term   10 years 10 years                
Additional disclosure                      
Warrant expiration term   10 years                  
Stock Options | Employee                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Total Compensation Expense   305,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_TitleOfIndividualAxis
= adk_EmployeeMember
  522,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_TitleOfIndividualAxis
= adk_EmployeeMember
             
Restricted stock                      
Additional disclosure                      
Unrecognized compensation expense 1,000,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
1,000,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
              1,000,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
 
Period of recognition of compensation expense   2 years 6 months 21 days                  
Shares granted (in shares)   221,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
30,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
               
Shares granted (in dollars per share)   $ 4.30us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
$ 4.34us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
               
Weighted average grant date fair value $ 3.68us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
$ 3.68us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
$ 3.31us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
    3.31us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
      $ 3.68us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
$ 3.20us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
Restricted stock | Common Stock Issued in December 2013 | Placement Agent                      
Additional disclosure                      
Restriction period         3 years 3 years          
Restricted stock | Directors                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Total Compensation Expense   40,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_DirectorMember
1,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_DirectorMember
            40,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_DirectorMember
 
Additional disclosure                      
Shares granted (in shares)           30,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_DirectorMember
70,515us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_DirectorMember
150,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_DirectorMember
     
Warrants granted (in dollars per share)                 $ 3.90adk_ClassOfWarrantOrRightIssuedWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_DirectorMember
   
Options forfeited (in shares)         20,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_DirectorMember
           
Restricted stock | Chief Financial Officer                      
Additional disclosure                      
Warrants granted (in dollars per share)           4.34adk_ClassOfWarrantOrRightIssuedWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ChiefFinancialOfficerMember
  4.49adk_ClassOfWarrantOrRightIssuedWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ChiefFinancialOfficerMember
     
Stock Options and Stock Warrants | Employee | Minimum                      
Weighted average significant assumptions used to estimate the fair value                      
Expected Term   5 years 2 months 12 days 5 years 2 months 12 days                
Stock Options and Stock Warrants | Employee | Maximum                      
Weighted average significant assumptions used to estimate the fair value                      
Expected Volatility (as a percent)   51.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
/ us-gaap_AwardTypeAxis
= adk_StockOptionsAndStockWarrantsMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_TitleOfIndividualAxis
= adk_EmployeeMember
63.20%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
/ us-gaap_AwardTypeAxis
= adk_StockOptionsAndStockWarrantsMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_TitleOfIndividualAxis
= adk_EmployeeMember
               
Risk-Free Interest Rate (as a percent)   1.73%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
/ us-gaap_AwardTypeAxis
= adk_StockOptionsAndStockWarrantsMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_TitleOfIndividualAxis
= adk_EmployeeMember
0.80%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
/ us-gaap_AwardTypeAxis
= adk_StockOptionsAndStockWarrantsMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_TitleOfIndividualAxis
= adk_EmployeeMember
               
Expected Term   5 years 2 months 12 days 5 years 2 months 12 days                
Restricted stock issued to Executives [Member] | Employee                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Total Compensation Expense   139,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= adk_RestrictedstockissuedtoExecutivesMember
/ us-gaap_TitleOfIndividualAxis
= adk_EmployeeMember
  28,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= adk_RestrictedstockissuedtoExecutivesMember
/ us-gaap_TitleOfIndividualAxis
= adk_EmployeeMember
             
Restricted stock issued to BOD [Member] | Nonemployee                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Total Compensation Expense   315,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= adk_RestrictedstockissuedtoBODMember
/ us-gaap_TitleOfIndividualAxis
= adk_NonemployeeMember
268,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= adk_RestrictedstockissuedtoBODMember
/ us-gaap_TitleOfIndividualAxis
= adk_NonemployeeMember
               
Stock options issued to BOD [Member] | Nonemployee                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Total Compensation Expense   $ 236,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= adk_StockoptionsissuedtoBODMember
/ us-gaap_TitleOfIndividualAxis
= adk_NonemployeeMember
$ 117,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= adk_StockoptionsissuedtoBODMember
/ us-gaap_TitleOfIndividualAxis
= adk_NonemployeeMember