Leases - Supplemental Cash Flow Disclosures (Details) - USD ($) $ in Thousands	6 Months Ended
	Jan. 31, 2022	Jan. 31, 2021
Leases [Abstract]
Operating cash flows related to operating leases	$ 13,344	$ 14,597
Operating cash flows related to finance leases	3	17
Financing cash flows related to finance leases	314	622
Right-of-use assets obtained in exchange for new operating lease liabilities	14,156	12,812
Right-of-use assets obtained in exchange for new finance lease liabilities	$ 0	$ 6,251