Note 6 - Leases - Components of Lease Expense (Details) - USD ($) $ in Thousands		12 Months Ended
		Nov. 27, 2021	Nov. 28, 2020
Operating lease cost		$ 11,958	$ 12,581
Amortization of assets1	[1]	673
Interest on lease liabilities1	[1]	110
Variable lease cost		5,990	4,024
Total net lease cost		$ 18,731	$ 16,605

[1] In fiscal year 2020, finance leases were not material for disclosure.