LEASES - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	9 Months Ended
	Apr. 30, 2021	Apr. 30, 2020
Cash paid for amounts included in measurement of lease liabilities:
Operating cash flows from operating leases	$ 12,328	$ 11,677
Operating cash flows from finance leases	4	7
Financing cash flows from finance leases	$ 52	$ 83