|**Earnings Per Share and Stock Repurchase Activity**                                                                                                   | 9 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
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|**Earnings Per Share [Abstract]**                                                                                                                      |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
|Earnings Per Share and Stock Repurchase Activity                                                                                                       | EARNINGS PER SHARE AND STOCK REPURCHASE ACTIVITYThe Company calculates basic earnings per share by dividing net earnings by the weighted average number of shares outstanding.  Diluted earnings per share reflects the impact of outstanding stock options, restricted stock and other stock-based arrangements.  The FASB has issued guidance requiring unvested share-based payment awards containing nonforfeitable rights to dividends or dividend equivalents (whether paid or unpaid) be considered participating securities and included in the computation of earnings per share pursuant to the two-class method.  The Company’s unvested restricted stock unit awards discussed inNote 13qualify as participating securities under this guidance.  However, the unvested restricted stock unit awards do not materially impact the calculation of basic or diluted earnings per share; therefore, the Company does not present the two-class method computation.   The following table provides a reconciliation of the numerators and denominators utilized in the calculation of basic and diluted earnings per share:Quarter EndedNine Months EndedAugust 27, 2016August 29, 2015August 27, 2016August 29, 2015Weighted average number of shares outstanding - Basic48,653,22050,099,85248,723,45950,188,327Dilutive effect of stock-based arrangements401,827425,197379,752513,163Weighted average number of shares outstanding - Diluted49,055,04750,525,04949,103,21150,701,490Net earnings attributable to CLARCOR Inc.$35,749$36,445$110,266$101,651Net earnings per share attributable to CLARCOR Inc. - Basic$0.73$0.73$2.26$2.03Net earnings per share attributable to CLARCOR Inc. - Diluted$0.73$0.72$2.25$2.00The following table provides additional information regarding the calculation of earnings per share and stock repurchase activity:Quarter EndedNine Months EndedAugust 27, 2016August 29, 2015August 27, 2016August 29, 2015Number of antidilutive options with exercise prices greater than the average market price excluded from the computation of dilutive earnings per share296,500730,150728,352730,150Common stock repurchased and retired pursuant to the Company's stock repurchase program$27,191$14,086$65,402$30,196Number of shares repurchased and retired pursuant to the Company's stock repurchase program455,797233,0001,253,401481,000AtAugust 27, 2016, there remained$227,838authorized for future purchases under the Company’s$250,000stock repurchase program that was approved by the Company's Board of Directors on June 27, 2016.
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|Weighted average number of shares outstanding - Basic                                                                                                  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
|Dilutive effect of stock-based arrangements                                                                                                            |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
|Weighted average number of shares outstanding - Diluted                                                                                                |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
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|Net earnings attributable to CLARCOR Inc.                                                                                                              |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
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|Net earnings per share attributable to CLARCOR Inc. - Basic                                                                                            |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
|Net earnings per share attributable to CLARCOR Inc. - Diluted                                                                                          |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
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|Number of antidilutive options with exercise prices greater than the average market price excluded from the computation of dilutive earnings per share |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
|Common stock repurchased and retired pursuant to the Company's stock repurchase program                                                                |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
|Number of shares repurchased and retired pursuant to the Company's stock repurchase program                                                            |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      

X- DefinitionIncludes the following two disclosures: 1) The complete disclosure pertaining to an entity's earnings per share and 2) Description of share repurchase program authorized by an entity's Board of Directors. Include also the allocation of amounts paid to purchase treasury stock.
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