Lease Maturity Disclosure (Details) - USD ($) $ in Thousands	Jul. 31, 2020	Aug. 01, 2019	Jul. 31, 2019
Leases [Abstract]
Lessee, Operating Lease, Liability, to be Paid, Year One	$ 16,684		$ 18,450
Lessee, Operating Lease, Liability, to be Paid, Year Two	14,703		16,132
Lessee, Operating Lease, Liability, to be Paid, Year Three	9,819		13,439
Lessee, Operating Lease, Liability, to be Paid, Year Four	5,677		10,065
Lessee, Operating Lease, Liability, to be Paid, Year Five	2,413		5,656
Lessee, Operating Lease, Liability, to be Paid, after Year Five	955		3,502
Lessee, Operating Lease, Liability, to be Paid	50,251		$ 67,244
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	(2,965)
Operating Lease, Liability	$ 47,286	$ 58,544