Leases - Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2022	Jan. 31, 2021
Leases [Abstract]
Renewal term	40 years		40 years
Operating lease expense	$ 6,943	$ 7,024	$ 13,997	$ 14,281
Amortization of right-of-use assets	155	167	309	334
Interest on finance lease liabilities	2	23	4	44
Short-term lease expense	1,723	1,023	3,491	2,268
Variable lease expense	330	395	554	934
Total lease expense	$ 9,153	$ 8,632	$ 18,355	$ 17,861