Consolidated Statements of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Oct. 31, 2014	Oct. 31, 2013
Net income (loss)	$ 3,654	$ (3,775)
Other comprehensive income, net of tax:
Foreign currency translation adjustment, net of tax	(3,630)	1,057
Unrealized gains on foreign currency forward contracts, net of tax		18
Total other comprehensive (loss) income, net of tax	(3,630)	1,075
Total comprehensive income (loss)	$ 24	$ (2,700)