Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Nov. 27, 2021	Nov. 28, 2020	Nov. 30, 2019
Net income (loss)	$ 18,042	$ (10,421)	$ (1,928)
Other comprehensive income (loss):
Actuarial adjustment to Long Term Cash Awards (LTCA)	26	(86)	(141)
Other comprehensive income (loss), net of tax	(428)	(158)	1,102
Total comprehensive income (loss)	17,614	(10,579)	(826)
Pension Plan [Member]
Other comprehensive income (loss):
Amortization	144	125	124
Income taxes	(44)	(10)	4
Supplemental Employee Retirement Plan [Member]
Other comprehensive income (loss):
Amortization	44	8	184
Income taxes	190	64	(382)
Actuarial adjustment to supplemental executive retirement defined benefit plan (SERP)	$ (788)	$ (259)	$ 1,313