Leases Lessee, Operating and Financing Lease Maturity (Details) $ in Thousands	Jul. 31, 2020 USD ($)
Finance Lease, Liability, Payment, Due, Rolling Maturity [Abstract]
2021	$ 768
2022	534
2023	24
2024	13
2025	0
Thereafter	0
Total future lease commitments	1,339
Less: imputed interest	22
Present value of lease liabilities	1,317
Lessee, Operating Lease, Liability, Payment, Due, Rolling Maturity [Abstract]
2021	27,718
2022	22,619
2023	19,355
2024	14,980
2025	10,156
Thereafter	45,807
Total future lease commitments	140,635
Less: imputed interest	20,230
Present value of lease liabilities	$ 120,405