Earnings Per Share and Stock Repurchase Activity (Details 1) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Aug. 30, 2014	Aug. 31, 2013	Aug. 30, 2014	Aug. 31, 2013
Earnings Per Share and Stock Repurchase Activity [Abstract]
Weighted average number of shares outstanding - Basic (in shares)	50,395,007	50,092,548	50,457,436	49,917,939
Dilutive effect of stock-based arrangements (in shares)	486,587	512,261	459,584	563,110
Weighted average number of shares outstanding - Diluted (in shares)	50,881,594	50,604,809	50,917,020	50,481,049
Net earnings attributable to CLARCOR Inc.	$ 41,703	$ 28,707	$ 100,576	$ 85,220
Net earnings per share attributable to CLARCOR Inc. - Basic (in dollars per share)	$ 0.83	$ 0.57	$ 1.99	$ 1.71
Net earnings per share attributable to CLARCOR Inc. - Diluted (in dollars per share)	$ 0.82	$ 0.57	$ 1.98	$ 1.69