Net Income/(Loss) Per Share (Details) (USD $) In Thousands, except Share data	3 Months Ended	9 Months Ended
Aug. 28, 2011	Aug. 29, 2010	Aug. 28, 2011	Aug. 29, 2010
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of net income/(loss) per share	3,802	22,886		19,286
Numerator for basic income per share:
Net income	$ 3,997	$ 8,902	$ 658	$ 19,534
Less: income allocated to participating securities	(13)	(42)	(25)	(93)
Net income allocated to Common Stock	3,984	8,860	633	19,441
Denominator for basic income per share:
Weighted-average shares outstanding, basic	9,025,077	9,218,180	9,093,563	9,200,511
Basic net income per share allocated to Common Stock	$ 0.44	$ 0.96	$ 0.07	$ 2.11
Numerator for diluted income per share:
Net income	3,997	8,902	658	19,534
Less: income allocated to participating securities	(15)	(39)	(25)	(85)
Net income allocated to Common Stock	$ 3,982	$ 8,863	$ 633	$ 19,449
Denominator for diluted income per share:
Weighted-average shares outstanding, basic	9,025,077	9,218,180	9,093,563	9,200,511
Dilutive effect of stock options and restricted stock	17,244	11,542	13,567	15,482
Weighted-average shares outstanding, diluted	9,042,321	9,229,722	9,107,130	9,215,993
Diluted net income per share allocated to Common Stock	$ 0.44	$ 0.96	$ 0.07	$ 2.11

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