Consolidated Statements of Changes in Stockholders' Equity [Parenthetical] (Series B Preferred Stock [Member])	12 Months Ended
Jul. 31, 2012	Jul. 31, 2011
Series B Preferred Stock [Member]
Common Stock, Dividend Rate, Percentage	6.00%	6.00%

The percentage rate of common stock used to calculate dividend payments on per preferred stock.

No definition available.

Name:	abhi_CommonStockDividendRatePercentage
Namespace Prefix:	abhi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration