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Earnings Per Share and Stock Repurchase Activity (Details 2) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Aug. 31, 2013	Sep. 01, 2012	Aug. 31, 2013	Sep. 01, 2012
EPS Reconciliation Disclosure Items [Line Items]
Number of antidilutive options with exercises prices greater than the average market price excluded from the computation of dilutive earnings per share	2,500	508,350	166,846	509,600
Common stock repurchased and retired pursuant to the Company's stock repurchase program	$ 6,785	$ 5,341	$ 24,149	$ 16,724
Number of shares repurchased and retired pursuant to the Company's stock repurchase program	124,000	110,300	470,100	337,800

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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