Consolidated Statements of Stockholders’ Equity (USD $) In Thousands, except Share data, unless otherwise specified	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
Balance at Nov. 27, 2010	$ 57,795	$ 478	$ 48,459	$ (427)	$ 106,305
Balance (in Shares) at Nov. 27, 2010	11,558,974
Comprehensive income
Net income			55,342		55,342
Actuarial adjustment to SERP, net of tax				(133)	(133)
Net change in unrealized holding gains, net of tax				(48)	(48)
Regular dividends			(1,092)		(1,092)
Special dividend			(5,665)		(5,665)
Issuance of common stock	771	(506)			265
Issuance of common stock (in Shares)	154,158
Purchase and retirement of common stock	(1,854)	(398)	(713)		(2,965)
Purchase and retirement of common stock (in Shares)	(370,800)
Stock-based compensation		426			426
Balance at Nov. 26, 2011	56,712		96,331	(608)	152,435
Balance (in Shares) at Nov. 26, 2011	11,342,332
Comprehensive income
Net income			26,713		26,713
Actuarial adjustment to SERP, net of tax				(379)	(379)
Net change in unrealized holding gains, net of tax				(236)	(236)
Regular dividends			(2,214)		(2,214)
Special dividend			(13,706)		(13,706)
Issuance of common stock	694	352			1,046
Issuance of common stock (in Shares)	138,903
Purchase and retirement of common stock	(3,222)	(988)	(2,805)		(7,015)
Purchase and retirement of common stock (in Shares)	(644,395)
Stock-based compensation		636			636
Balance at Nov. 24, 2012	54,184		104,319	(1,223)	157,280
Balance (in Shares) at Nov. 24, 2012	10,836,840				10,836,840
Comprehensive income
Net income			5,096		5,096
Actuarial adjustment to SERP, net of tax				(191)	(191)
Regular dividends			(2,393)		(2,393)
Special dividend			(2,172)		(2,172)
Issuance of common stock	801	(104)			697
Issuance of common stock (in Shares)	160,128
Purchase and retirement of common stock	(688)	(937)	(324)		(1,949)
Purchase and retirement of common stock (in Shares)	(137,650)
Stock-based compensation		728			728
Excess tax benefits from stock-based compensation		313			313
Balance at Nov. 30, 2013	$ 54,297		$ 104,526	$ (1,414)	$ 157,409
Balance (in Shares) at Nov. 30, 2013	10,859,318				10,859,318