Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 30, 2018	Apr. 30, 2017	Apr. 30, 2018	Apr. 30, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 18,736	$ 17,511	$ 74,153	$ 54,381
Other comprehensive income (loss):
Foreign currency translation	(6,538)	1,384	4,608	(2,549)
Total other comprehensive income (loss)	(6,538)	1,384	4,608	(2,549)
Comprehensive income	$ 12,198	$ 18,895	$ 78,761	$ 51,832