Note 13 - Capital Stock and Stock Compensation - Additional Information Regarding Activity in Stock Options (Details) - USD ($) $ in Thousands		12 Months Ended
		Nov. 25, 2017	Nov. 26, 2016	Nov. 28, 2015
Total intrinsic value of options exercised		$ 564	$ 124	$ 5,934
Total fair value of options vested				87
Total cash received from the exercise of options		310	114	4,031
Excess tax benefits recognized as additional paid-in capital upon the exercise of options (1)				1,998
Excess tax benefits recognized in income tax expense upon the exercise of options		554	87
Employee Stock Option [Member]
Excess tax benefits recognized as additional paid-in capital upon the exercise of options (1)	[1]			1,899
Excess tax benefits recognized in income tax expense upon the exercise of options		$ 188	$ 41

[1] Prior to the adoption of ASU 2016-09 in fiscal 2016. Subsequent to adoption, all excess tax benefits are included as a component of the provision for income taxes.