Note 12 - Capital Stock and Stock Compensation - Compensation Expense Related to Restricted Stock and Stock Options Included in Selling, General and Administrative Expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	Nov. 28, 2020	Nov. 30, 2019	Nov. 24, 2018
Selling, General and Administrative Expenses [Member]
Stock based compensation expense	$ 420	$ 958	$ 1,133