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Stock Options (Details Textual) (Employee Stock Option [Member], USD $)
6 Months Ended
Jun. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Grant Date Intrinsic Value $ 0.44us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGrantDateIntrinsicValue
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options $ 1,918,638us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 2 years 6 months
2012 Stock Incentive Plan Member  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized 35,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_OptionIndexedToIssuersEquityEquityAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= aphb_TwoThousandAndTwelveStockIncentivePlanMember
2009 Stock Incentive Plan Member  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized 4,200,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_OptionIndexedToIssuersEquityEquityAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= aphb_TwoThousandAndNineStockIncentivePlanMember
2013 Stock Incentive Plan Member  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized 40,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_OptionIndexedToIssuersEquityEquityAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= aphb_TwoThousandAndThirteenStockIncentivePlanMember