SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Accounts Receivable (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2022	Jul. 31, 2021
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of year	$ 49	$ 134
Provisions charged to expense	0	0
Accounts written off	0	(6)
Recovered	(5)	(79)
Balance at end of year	$ 44	$ 49