OTHER COMPREHENSIVE INCOME (LOSS) (Details 1) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jul. 31, 2013	Jul. 31, 2012	Jul. 31, 2011
Equity [Abstract]
Tax on net unrealized gains/(losses) arising during the period	$ 790	$ (260)	$ (2,292)
Net unrealized gains/(losses) arising during the period, net of tax (expense)/benefit of $790, $(260) and $(2,292) in 2013, 2012 and 2011, respectively	(1,416)	56	4,076
Reclassification adjustment for gain included in net earnings	(65)	(5,952)	0
Other comprehensive income	$ (1,481)	$ (5,896)	$ 4,076