REVENUE RECOGNITION - Summary of Changes in Deferred Revenue (Detail) - USD ($) $ in Thousands	Apr. 30, 2022	Jul. 31, 2021	Apr. 30, 2021	Jul. 31, 2020
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Contract assets	$ 498	$ 627
Deferred revenue - current	3,099	2,212
Deferred revenue - long-term	130	108
Total deferred revenue	3,229	2,320	$ 2,499	$ 2,464
Accounts receivable, trade, net
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Accounts receivable, trade, net	$ 43,932	$ 36,547