| Schedule of Weighted Average Number of Shares [Table Text Block] |
The following table provides a reconciliation of the numerators and denominators utilized in the calculation of basic and diluted earnings per share.
| | | | | | | | | | | | | | | | | | Quarter Ended | | Nine Months Ended | | August 27, 2011 | | August 28, 2010 | | August 27, 2011 | | August 28, 2010 | Weighted average number of shares outstanding - Basic | 50,527,206 |
| | 50,796,393 |
| | 50,563,556 |
| | 50,700,066 |
| Dilutive effect of stock-based arrangements | 673,035 |
| | 452,564 |
| | 693,065 |
| | 445,005 |
| Weighted average number of shares outstanding - Diluted | 51,200,241 |
| | 51,248,957 |
| | 51,256,621 |
| | 51,145,071 |
| | | | | | | | | Net earnings attributable to CLARCOR Inc. | $ | 32,070 |
| | $ | 28,326 |
| | $ | 86,759 |
| | $ | 67,077 |
| | | | | | | | | Net earnings per share attributable to CLARCOR Inc. - Basic | $ | 0.63 |
| | $ | 0.56 |
| | $ | 1.72 |
| | $ | 1.32 |
| Net earnings per share attributable to CLARCOR Inc. - Diluted | $ | 0.63 |
| | $ | 0.55 |
| | $ | 1.69 |
| | $ | 1.31 |
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| Additional Information Earnings Per Share and Treasury Stock Transactions [Table Text Block] |
The following table provides additional information regarding the calculation of earnings per share and treasury stock transactions. | | | | | | | | | | | | | | | | | | Quarter Ended | | Nine Months Ended | | August 27, 2011 | | August 28, 2010 | | August 27, 2011 | | August 28, 2010 | Number of antidilutive options with exercises prices greater than the average market price excluded from the computation of dilutive earnings per share | 60,000 |
| | 347,350 |
| | 60,000 |
| | 646,349 |
| Common stock repurchased and retired pursuant to the Company's stock repurchase program | $ | 9,312 |
| | $ | 10,009 |
| | $ | 18,204 |
| | $ | 10,009 |
| Number of shares repurchased and retired pursuant to the Company's stock repurchase program | 222,051 |
| | 288,842 |
| | 427,051 |
| | 288,842 |
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