Severance Charge (Severance Accrual) (Details)	3 Months Ended
Mar. 31, 2016 USD ($)
Severance Charge [Abstract]
Accrued severance, December 31, 2015	$ 308,000
Cash payments in 2016	(170,000)
Accrued severance, March 31, 2016	$ 138,000

Represents the total cash outflows for employee severance costs during the period.

No definition available.

Name:	aphb_PaymentsForSeveranceCosts
Namespace Prefix:	aphb_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration