REVENUE RECOGNITION - Additional Information (Detail) - USD ($) $ in Thousands	Jan. 31, 2021	Jul. 31, 2020	Jan. 31, 2020	Jul. 31, 2019
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Contract assets	$ 16,589	$ 13,016
Deferred revenue - current	5,292	2,860
Deferred revenue - long-term	202	85
Total deferred revenue	5,494	2,945	$ 3,993	$ 3,029
Accounts receivable, trade, net
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Accounts receivable, trade, net	$ 86,455	$ 93,072