Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Oct. 31, 2018	Oct. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 19,242	$ 22,929
Other comprehensive loss:
Foreign currency translation	(5,223)	(1,233)
Total other comprehensive loss	(5,223)	(1,233)
Comprehensive income	$ 14,019	$ 21,696