| **INCENTIVE PLANS AND STOCK-BASED COMPENSATION (Note)**                       | 9 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         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| **Disclosure of Compensation Related Costs, Share-based Payments [Abstract]** | Â                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            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| INCENTIVE PLANS AND STOCK-BASED COMPENSATION                                  | INCENTIVE PLANS AND STOCK-BASED COMPENSATIONOn March 23, 2009, the shareholders of CLARCOR approved the 2009 Incentive Plan, which replaced the 2004 Incentive Plan.  The 2009 Incentive Plan allows the Company to grant stock options, restricted stock unit awards, restricted stock, performance awards and other awards to officers, directors and key employees of up to 3,800,000 shares during a ten-year period that ends in December 2019.  Upon share option exercise or restricted stock unit award conversion, the Company issues new shares unless treasury shares are available.  The key provisions of the Company’s stock-based incentive plans are described in Note N of the Company’s Consolidated Financial Statements included in the 2010 Form 10-K.Stock OptionsNonqualified stock options are granted at exercise prices equal to the market price of CLARCOR common stock at the date of grant, which is the date the Company’s Board of Directors approves the grant and the participants receive it.  The Company’s Board of Directors determines the vesting requirements for stock options at the time of grant and may accelerate vesting.  In general, options granted to key employees vest 25% per year beginning at the end of the first year; therefore, they become fully exercisable at the end of four years.  Vesting may be accelerated in the event of retirement, disability or death of a participant or change in control of the Company.  Options granted to non-employee directors vest immediately.  All options expire ten years from the date of grant unless otherwise terminated.The following table summarizes information related to stock options and stock option exercises during the quarter and nine months endedAugust 27, 2011 and August 28, 2010. Quarter Ended Nine Months Ended August 27, 2011 August 28, 2010 August 27, 2011 August 28, 2010Pre-tax compensation expense$967 $603 $3,817 $3,133Deferred tax benefits(356) (175) (1,403) (1,026)Excess tax benefits (expense) associated with tax deductions over (under) the amount of compensation expense recognized in the consolidated condensed financial statements297 185 2,338 1,968Fair value of stock options on date of grant27 9 5,803 4,161Total intrinsic value of stock options exercised885 490 7,443 5,383Cash received upon exercise of stock options772 726 6,009 4,150Tax benefit realized from exercise of stock options, net297 163 2,332 1,939Addition to capital in excess of par value due to exercise of stock options1,033 857 7,027 5,264The following table summarizes activity with respect to stock options granted by the Company and includes options granted under the 1994 Incentive Plan, the 2004 Incentive Plan and the 2009 Incentive Plan. Options GrantedUnder IncentivePlans WeightedAverageExercise PriceOutstanding at beginning of year3,229,410 $29.07Granted494,750 $43.00Exercised(358,662) $24.07Surrendered(10,336) $36.23Outstanding at end of period3,355,162 $31.64    Exercisable at end of period2,391,873 $29.30 At August 27, 2011, there was $4,650 of unrecognized compensation cost related to option awards which the Company expects to recognize over a weighted-average period of 2.58 years.The following table summarizes information about the Company’s outstanding and exercisable options at August 27, 2011.  Options Outstanding Options ExercisableRange of ExercisePrices Number WeightedAverageExercisePrice Intrinsic Value WeightedAverageRemaining Lifein Years Number WeightedAverageExercisePrice Intrinsic Value WeightedAverageRemaining Lifein Years$11.50 - $13.75 22,600 $12.75 $688 0.20 22,600 $12.75 $688 0.20$16.01 - $22.80 454,084 $19.79 10,619 1.81 454,084 $19.79 10,619 1.81$25.31 - $34.40 1,902,544 $30.60 23,941 5.71 1,444,986 $30.00 19,051 5.01$35.11 - $42.86 915,934 $39.32 3,538 7.71 410,203 $36.14 2,888 6.30$44.07 60,000 $44.07 — 9.58 60,000 $44.07 — —  3,355,162 $31.64 $38,786 5.76 2,391,873 $29.30 $33,246 4.69The fair value of each option grant is estimated on the date of grant using the Black-Scholes option pricing model with the following weighted average assumptions by grant year. Nine Months Ended August 27, 2011 August 28, 2010Weighted average fair value per option at the date of grant for options granted$11.73 $8.72Risk-free interest rate2.52% 2.76%Expected dividend yield0.97% 1.25%Expected volatility factor25.54% 26.28%Expected option term in years6.4 5.7The expected option term in years selected for options granted during each period presented represents the period of time that the options are expected to be outstanding based on historical data of option holder exercise and termination behavior.  Expected volatilities are based upon historical volatility of the Company’s monthly stock closing prices over a period equal to the expected life of each option grant.  The risk-free interest rate is selected based on yields from U.S. Treasury zero-coupon issues with a remaining term approximately equal to the expected term of the options being valued.  Expected dividend yield is based on the estimated dividend yield determined on the date of issuance.Restricted Stock Unit AwardsThe Company’s restricted stock unit awards are considered nonvested share awards.  The restricted stock unit awards require no payment from the employee.  Compensation cost is recorded based on the market price of the stock on the grant date and is recorded equally over the vesting period of four years.  During the vesting period, officers and key employees receive compensation equal to the amount of dividends declared on common shares they would have been entitled to receive had the shares been issued.  Upon vesting, employees may elect to defer receipt of their shares.  There were 103,390 and 108,800 vested and deferred shares at August 27, 2011 and November 27, 2010, respectively.The following table summarizes information related to restricted stock unit awards during the quarter and nine months endedAugust 27, 2011 and August 28, 2010. Quarter Ended Nine Months Ended August 27, 2011 August 28, 2010 August 27, 2011 August 28, 2010Pre-tax compensation expense$119 $39 $969 $871Deferred tax benefits(44) (5) (356) (285)Excess tax benefits (expense) associated with tax deductions over (under) the amount of compensation expense recognized in the consolidated condensed financial statements(40) (14) 43 (75)Fair value of restricted stock unit awards on date of grant— — 1,263 1,102Fair value of restricted stock unit awards vested— — 905 742The following table summarizes the restricted stock unit awards. Units WeightedAverageGrant DateFair ValueNonvested at beginning of year70,894 $33.23Granted29,467 $42.86Vested(26,937) $33.60Nonvested at end of period73,424 $36.96 The Company has recognized an aggregate of $1,519 of compensation cost for periods prior to August 27, 2011 related to restricted stock unit awards.  As of August 27, 2011, there was $967 of total unrecognized compensation cost related to restricted stock unit awards which the Company expects to recognize over a weighted-average period of 2.55 years. |

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| - Definition
The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.
+ References
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