Employee Benefit Plan (Details Textuals) - USD ($) $ in Millions	12 Months Ended
	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2018
UNITED STATES
Defined Contribution Plan Disclosure [Line Items]
Defined contribution plan, contributions by employer, percentage	20.00%
Maximum employer contribution on employees salary deferral	15.00%
Recognized deferred compensation expenses	$ 1.9	$ 1.7	$ 0.9
Foreign Plan
Defined Contribution Plan Disclosure [Line Items]
Defined contribution plan, contributions by employer, percentage	5.00%
Recognized deferred compensation expenses	$ 1.2	$ 0.9	$ 0.7