Note 11 - Leases - Lease Cost (Details) $ in Thousands	3 Months Ended
	Feb. 29, 2020 USD ($)
Operating lease cost	$ 8,772
Amortization of right-of-use assets	14
Interest on lease liabilities	4
Short-term lease cost	494
Variable lease cost	36
Sublease income	(394)
Total lease cost	8,926
Cash paid for amounts included in the measurements of lease liabilities, operating	11,652
Cash paid for amounts included in the measurements of lease liabilities, financing	16
Lease liabilities arising from new right-of-use assets, operating	4,830
Lease liabilities arising from new right-of-use assets, financing	$ 1,031
Weighted average remaining lease terms (years), operating (Year)	6 years 7 months 6 days
Weighted average remaining lease terms (years), financing (Year)	5 years 10 months 24 days
Weighted average discount rates, operating	5.00%
Weighted average discount rates, financing	4.72%