REVENUE RECOGNITION - Additional Information (Detail) - USD ($) $ in Thousands	Jan. 31, 2020	Jul. 31, 2019
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Contract assets	$ 23,546	$ 21,473
Deferred revenue current	3,895	2,967
Deferred revenue long-term	98	62
Deferred revenue	3,993	3,029
Contract with Customer, Asset, Gross, Current	3,993	3,029
Trade Accounts Receivable
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Accounts receivable, trade	$ 118,291	$ 112,141