EARNINGS PER SHARE AND TREASURY STOCK TRANSACTIONS (Details 1) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 03, 2012	Feb. 26, 2011
EPS Reconciliation Disclosure Items [Line Items]
Weighted average number of shares outstanding - Basic	50,411,196	50,568,499
Dilutive effect of stock-based arrangements	683,189	718,739
Weighted average number of shares outstanding - Diluted	51,094,385	51,287,238
Net earnings attributable to CLARCOR Inc.	$ 23,479	$ 21,881
Net earnings per share attributable to CLARCOR Inc. - Basic	$ 0.47	$ 0.43
Net earnings per share attributable to CLARCOR Inc. - Diluted	$ 0.46	$ 0.43