Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2022	Jan. 31, 2021
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (2,655)	$ 2,302	$ (4,974)	$ 2,601
Other comprehensive (loss) income:
Foreign currency translation adjustments	342	(582)	619	(411)
Comprehensive (loss) income	$ (2,313)	$ 1,720	$ (4,355)	$ 2,190