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Note 2 - Stock Based Compensation (Details) (USD $)
3 Months Ended 9 Months Ended 3 Months Ended
Dec. 26, 2014
Dec. 27, 2013
Sep. 27, 2013
Jun. 28, 2013
Dec. 26, 2014
Dec. 27, 2013
Sep. 25, 2015
Sep. 26, 2014
Note 2 - Stock Based Compensation (Details) [Line Items]                
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value (in Dollars) $ 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue $ 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue     $ 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue $ 600us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in Shares)     50,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod 40,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod        
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized (in Dollars) $ 33,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized       $ 33,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized      
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition         255 days      
Employee Stock Option [Member] | Minimum [Member]                
Note 2 - Stock Based Compensation (Details) [Line Items]                
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period         1 year      
Employee Stock Option [Member] | Maximum [Member]                
Note 2 - Stock Based Compensation (Details) [Line Items]                
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period         4 years      
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period         10 years      
Employee Stock Option [Member]                
Note 2 - Stock Based Compensation (Details) [Line Items]                
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term           6 years 109 days    
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate           68.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
   
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate           0.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
   
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate           1.10%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
   
Share Based Compensation Arrangement By Share Based PaymentAwardFairValueAssumptionsExpectedForfeitures         30.00%api_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedForfeitures
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
23.00%api_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedForfeitures
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
   
Restricted Stock [Member] | Minimum [Member]                
Note 2 - Stock Based Compensation (Details) [Line Items]                
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period         6 months      
Restricted Stock [Member] | Maximum [Member]                
Note 2 - Stock Based Compensation (Details) [Line Items]                
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period         4 years      
Restricted Stock [Member]                
Note 2 - Stock Based Compensation (Details) [Line Items]                
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in Shares)             0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
2007 Equity Incentive Plan [Member]                
Note 2 - Stock Based Compensation (Details) [Line Items]                
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in Shares) 2,500,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_PlanNameAxis
= api_TwoThousandSevenEquityIncentivePlanMember
      2,500,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_PlanNameAxis
= api_TwoThousandSevenEquityIncentivePlanMember
     
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in Shares) 266,095us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
/ us-gaap_PlanNameAxis
= api_TwoThousandSevenEquityIncentivePlanMember
      266,095us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
/ us-gaap_PlanNameAxis
= api_TwoThousandSevenEquityIncentivePlanMember