Other Income (Expense), Net (Details) - USD ($) $ in Thousands	3 Months Ended
	Oct. 31, 2019	Oct. 31, 2018
Other Income and Expenses [Abstract]
Foreign currency transaction gains (losses)	$ 671	$ (1,205)
Gain (loss) on investments	26	(46)
Other	(463)	(98)
Total other income (expense), net	$ 234	$ (1,349)