SUBSEQUENT EVENT (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended		0 Months Ended
	Jan. 31, 2012	Jan. 31, 2011	Mar. 01, 2012 ForteBio [Member]
Subsequent Event [Line Items]
Business Acquisition, Cost of Acquired Entity, Purchase Price	$ 25,669	$ 0	$ 142,500