Condensed Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2014	Jan. 31, 2013
Net income	$ 19,314	$ 9,809	$ 15,539	$ 14,190
Other comprehensive (loss) income, net of tax:
Foreign currency translation adjustment	(251)	2,518	806	5,721
Unrealized gains (losses) on foreign currency forward contracts, net of tax of $46 and $14 for the three months ended January 31, 2014 and 2013, respectively, and $56 and $ (10) for the six months ended January 31, 2014 and 2013, respectively	84	29	101	(18)
Total other comprehensive (loss) income, net of tax	(167)	2,547	907	5,703
Total comprehensive income	$ 19,147	$ 12,356	$ 16,446	$ 19,893