Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2018	Jul. 31, 2017	Jul. 31, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 91,041	$ 71,378	$ 59,953
Other comprehensive (loss) income:
Foreign currency translation	(1,556)	1,895	(13,019)
Total other comprehensive (loss) income	(1,556)	1,895	(13,019)
Comprehensive income	$ 89,485	$ 73,273	$ 46,934