Leases - Lease Costs (Details) - USD ($) $ in Thousands	3 Months Ended
	Feb. 28, 2022	Feb. 28, 2021	Nov. 30, 2021
Leases [Abstract]
Lease costs under long-term operating leases	$ 1,764	$ 2,135
Lease costs under short-term operating leases	14	15
Variable lease cost under short-term and long-term operating leases	121	115
Total operating lease cost	1,899	2,265
Cash paid for leases	2,146	2,258
Right-of-use assets recognized for new leases and amendments (non-cash)	$ 221	$ 2,338
Weighted average remaining lease term in years	3 years 11 months 4 days		4 years 1 month 24 days
Weighted average discount rate	2.60%		2.60%