LEASES - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Oct. 31, 2021	Oct. 31, 2020
Cash paid for amounts included in measurement of lease liabilities:
Operating cash flows from operating leases	$ 3,930	$ 4,239
Operating cash flows from finance leases	1	2
Financing cash flows from finance leases	$ 18	$ 17