Note 13 - 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. 30, 2019	Nov. 24, 2018	Nov. 25, 2017
Selling, General and Administrative Expenses [Member]
Stock based compensation expense	$ 958	$ 1,133	$ 1,028