Subsequent Event (Details) - USD ($) $ / shares in Units, $ in Millions	Mar. 22, 2018	Jan. 12, 2018
Subsequent Events [Abstract]
Sale of stock, number of shares issued in transaction	2,743,640	4,000,000
Sale of stock, price per share	$ 1.10	$ 1.00
Proceeds from equity offerings, gross	$ 3.0	$ 4.0

The gross cash inflow, before deducting the underwriting discount and commissions and other offering expenses payable from the issuance of common stock, preferred stock, treasury stock, stock options, and other types of equity.

No definition available.

Name:	aphb_ProceedsFromEquityOfferingsGross
Namespace Prefix:	aphb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration