Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Common Stock Outstanding [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Common Stock Outstanding [Member]	Additional Paid-in Capital [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	AOCI Attributable to Parent [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]	Total
Balance (in shares) at Nov. 28, 2020		9,942,787
Balance at Nov. 28, 2020		$ 49,714		$ 0	$ 109,710		$ (1,394)		$ 158,030
Net income (loss)		0		0	18,042		0		18,042
Amortization of defined benefit plan costs, net of tax		0		0	0		138		138
Actuarial adjustments to defined benefit plans, net of tax		0		0	0		(567)		(567)
Regular dividends		0		0	(5,210)		0		(5,210)
Special dividend		$ 0		0	(2,479)		0		(2,479)
Issuance of common stock (in shares)		34,902
Issuance of common stock		$ 175		230	0		0		405
Purchase and retirement of common stock (in shares)		(215,564)
Purchase and retirement of common stock		$ (1,078)		(275)	(4,432)		0		(5,785)
Stock-based compensation		$ 0		158	0		0		158
Balance (in shares) at Nov. 27, 2021		9,762,125
Balance at Nov. 27, 2021	$ 0	$ 48,811	$ 0	113	115,631	$ 0	(1,823)	$ 0	162,732
Net income (loss)		0		0	65,345		0		65,345
Amortization of defined benefit plan costs, net of tax		0		0	0		192		192
Actuarial adjustments to defined benefit plans, net of tax		0		0	0		1,885		1,885
Regular dividends		0		0	(5,668)		0		(5,668)
Special dividend		$ 0		0	(14,494)		0		(14,494)
Issuance of common stock (in shares)		59,024
Issuance of common stock		$ 295		129	0		0		424
Purchase and retirement of common stock (in shares)		(869,310)
Purchase and retirement of common stock		$ (4,347)		(780)	(10,014)		0		(15,141)
Stock-based compensation		0		538	0		0		538
Foreign currency translation adjustments, net of tax		$ 0		0	0		(204)		(204)
Balance (in shares) at Nov. 26, 2022		8,951,839
Balance at Nov. 26, 2022		$ 44,759		0	150,800		50		195,609
Net income (loss)		0		0	(3,171)		0		(3,171)
Amortization of defined benefit plan costs, net of tax		0		0	0		68		68
Actuarial adjustments to defined benefit plans, net of tax		0		0	0		316		316
Regular dividends		$ 0		0	(5,982)		0		(5,982)
Issuance of common stock (in shares)		74,421
Issuance of common stock		$ 373			0		0		318
Purchase and retirement of common stock (in shares)		(258,039)
Purchase and retirement of common stock		$ (1,290)		(701)	(2,293)		0		(4,284)
Stock-based compensation		0		849	0		0		849
Foreign currency translation adjustments, net of tax		$ 0		0	0		(282)		(282)
Adjustments to Additional Paid in Capital, Stock Issuance				(55)
Balance (in shares) at Nov. 25, 2023		8,768,221
Balance at Nov. 25, 2023		$ 43,842		$ 93	$ 139,354		$ 152		$ 183,441