ACCUMULATED OTHER COMPREHENSIVE INCOME (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Apr. 30, 2014	Apr. 30, 2013	Apr. 30, 2014	Apr. 30, 2013
Changes in the composition of accumulated other comprehensive income
Balance at the beginning of the period	$ 28,374	$ 54,594	$ 47,015	$ 54,103
Foreign currency translation adjustment	3,299	(2,094)	(12,697)	(1,624)
Unrealized loss on interest rate swaps	(141)		(2,817)
Reclassification of loss on interest rate swaps to interest expense	43		128
Unrealized (loss) gain on securities, net	(164)	318	(218)	339
Balance at the end of the period	$ 31,411	$ 52,818	$ 31,411	$ 52,818