Leases | Maturities of Operating Lease Liabilities (Details) $ in Thousands	Apr. 30, 2019 USD ($)
Maturities of Operating Lease Liabilities [Abstract]
Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year	$ 49,173
Lessee, Operating Lease, Liability, Payments, Due Year Two	58,975
Lessee, Operating Lease, Liability, Payments, Due Year Three	39,114
Lessee, Operating Lease, Liability, Payments, Due Year Four	28,405
Lessee, Operating Lease, Liability, Payments, Due Year Five	21,325
Lessee, Operating Lease, Liability, Payments, Due after Year Five	35,172
Lessee, Operating Lease, Liability, Payments, Due	232,164
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	(26,395)
Operating Lease, Liability	$ 205,769