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Severance Charge (Details) (USD $) | 3 Months Ended
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Mar. 31, 2015
Severance Charge [Line Items] |
Accrued severance, December 31, 2014 | $ 555,000 aphb_EmployeeBenefitAccuredLiabilities
Payments in 2015 | (122,000)aphb_PaymentsForSeveranceCosts
Accrued severance, March 31, 2015 | $ 433,000 aphb_EmployeeBenefitAccuredLiabilities

X
- Definition The amount of employee benefit accrued liabilities during the period. + References No definition available. + Details
Name: | aphb_EmployeeBenefitAccuredLiabilities
Namespace Prefix: | aphb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents the total cash outflows for employee severance costs during the period. + References No definition available. + Details
Name: | aphb_PaymentsForSeveranceCosts
Namespace Prefix: | aphb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | aphb_SeveranceChargeLineItems
Namespace Prefix: | aphb_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration