Gain on Settlement (Details) (USD $) In Thousands, unless otherwise specified	Jul. 31, 2012
Minimum payments due, 2013	$ 55,000
Minimum payments due, Total	$ 55,000

Settlement of litigation occurring in second year during the period.

No definition available.

Name:	abhi_LitigationSettlementYearTwo
Namespace Prefix:	abhi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant