Severance Charge (Severance Accrual) (Details)	6 Months Ended
Jun. 30, 2016 USD ($)
Severance Charge [Abstract]
Accrued severance, December 31, 2015	$ 308,000
Cash payments in 2016	(236,000)
Accrued severance, June 30, 2016	$ 72,000

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