Note 13 - Earnings (Loss) Per Share - Reconciliation of Basic and Diluted Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended			6 Months Ended
	May 29, 2021	May 30, 2020		May 29, 2021	May 30, 2020
Basic earnings (losses) per share	$ 5,974	$ (20,352)		$ 9,985	$ (19,142)
Basic earnings (loss) per share, weighted average shares (in shares)	9,894,627	9,956,975		9,907,073	9,992,101
Basic earnings (loss) per share (in dollars per share)	$ 0.60	$ (2.04)		$ 1.01	$ (1.92)
Options and restricted shares, net income	$ 0	$ 0	[1]
Options and restricted shares, weighted average shares (in shares)	5,476	0	[1]	12,629
Diluted earnings (loss) per share	$ 5,974	$ (20,352)		$ 9,985	$ (19,142)
Diluted income (loss) per share, weighted average shares (in shares)	9,900,103	9,956,975		9,919,702	9,992,101
Diluted earnings (loss) per share (in dollars per share)	$ 0.60	$ (2.04)		$ 1.01	$ (1.92)
Diluted earnings (loss) per share	$ 5,974	$ (20,352)		$ 9,985	$ (19,142)
Diluted income (loss) per share (in shares)	9,900,103	9,956,975		9,919,702	9,992,101

[1] Due to the net loss, potentially dilutive securities would have been anti-dilutive and are therefore excluded.