Leases - Narrative (Details) - USD ($) $ in Thousands	Aug. 31, 2020	Dec. 01, 2019	Nov. 30, 2019
Lessee, Lease, Description [Line Items]
Operating lease right-of-use assets	$ 24,011		$ 0
Operating lease, liability	$ 25,713
Accounting Standards Update 2016-02
Lessee, Lease, Description [Line Items]
Operating lease right-of-use assets		$ 28,900
Operating lease, liability		$ 29,900
Minimum
Lessee, Lease, Description [Line Items]
Term of contract (in years)	1 year
Maximum
Lessee, Lease, Description [Line Items]
Term of contract (in years)	10 years