| **Incentive Plans and Stock-Based Compensation**                              | 9 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          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| **Disclosure of Compensation Related Costs, Share-based Payments [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  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| Incentive Plans and Stock-Based Compensation                                  | INCENTIVE PLANS AND STOCK-BASED COMPENSATIONOn March 25, 2014, the shareholders of CLARCOR approved the 2014 Incentive Plan, which replaced the 2009 Incentive Plan.  The 2014 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 6,600,000 shares during a ten-year period that ends in April 2024.  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 O of the Company’s Consolidated Financial Statements included in the 2015 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, however, beginning in 2013 stock-based compensation for the Company's Board of Directors has been in the form of restricted stock, rather than stock options.  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 three and nine months ended August 27, 2016 and August 29, 2015:  Quarter Ended Nine Months Ended  August 27, 2016August 29, 2015 August 27, 2016August 29, 2015Pre-tax compensation expense $522 $896 $2,346 $4,460Deferred tax benefits (190) (326) (853) (1,622)Excess tax benefits associated with tax deductions over the amount of compensation expense recognized in the consolidated condensed financial statements 981 139 1,804 923Fair value of stock options on date of grant — — 2,144 3,196Total intrinsic value of stock options exercised 5,991 535 12,230 3,699Cash received upon exercise of stock options 13,830 710 29,292 5,306Addition to capital in excess of par value due to exercise of stock options 14,491 830 30,392 6,079The following table summarizes activity for the nine months endedAugust 27, 2016 with respect to stock options granted by the Company and includes options granted under the 1994 Incentive Plan, the 2004 Incentive Plan, the 2009 Incentive Plan and the 2014 Incentive Plan: Options GrantedUnder IncentivePlans WeightedAverageExercise PriceOutstanding at beginning of year2,422,538 $48.46Granted296,500 $46.45Exercised(709,312) $41.67Surrendered(54,348) $54.02Outstanding at end of period1,955,378 $50.47    Exercisable at end of period1,267,125 $48.42 At August 27, 2016, there was $2,482 of unrecognized compensation cost related to option awards which the Company expects to recognize over a weighted-average period of 1.87 years.The following table summarizes information about the Company’s outstanding and exercisable options at August 27, 2016:  Options Outstanding Options ExercisableRange of ExercisePrices Number WeightedAverageExercisePrice Intrinsic Value WeightedAverageRemaining Lifein Years Number WeightedAverageExercisePrice Intrinsic Value WeightedAverageRemaining Lifein Years$25.31 - $36.48 222,557 $32.70 $7,254 2.39 222,557 $32.70 $7,254 2.39$42.86 - $57.74 1,041,420 $46.42 19,649 6.71 692,134 $46.50 13,003 5.54$61.57 - $63.22 691,401 $62.28 2,083 7.76 352,434 $62.13 1,114 7.66  1,955,378 $50.47 $28,986 6.59 1,267,125 $48.42 $21,371 5.58The 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, 2016 August 29, 2015Weighted average fair value per option at the date of grant for options granted $7.23 $10.26Risk-free interest rate 1.46% 1.31%Expected dividend yield 1.89% 1.27%Expected volatility factor 20.40% 19.50%Expected option term in years 5.0 5.0The 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 (generally 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 8,058 and 14,520 vested and deferred shares at August 27, 2016 and November 28, 2015, respectively.The following table summarizes information related to restricted stock unit awards during the three and nine months ended  August 27, 2016 and August 29, 2015:  Quarter EndedNine Months Ended  August 27, 2016August 29, 2015August 27, 2016August 29, 2015Pre-tax compensation expense $325 $427 $1,598 $2,050Deferred tax benefits (118) (155) (581) (745)Excess tax (shortfall) benefits associated with tax deductions over the amount of compensation expense recognized in the consolidated condensed financial statements 4 4 (106) 215Fair value of restricted stock unit awards on date of grant — 25 2,954 3,208Fair value of restricted stock unit awards vested 58 154 1,590 1,132The following table summarizes activity for the nine months endedAugust 27, 2016 with respect to the restricted stock unit awards: Units WeightedAverageGrant DateFair ValueNonvested at beginning of year71,592 $60.09Granted63,605 $46.45Vested(28,613) $55.57Surrendered(3,919) $34.88Nonvested at end of period102,665 $52.51 As of August 27, 2016, there was $3,218 of total unrecognized compensation cost related to restricted stock unit awards which the Company expects to recognize over a weighted-average period of 2.60 years.Restricted Stock Unit Awards with Performance ConditionsBeginning in 2015, performance awards were issued to officers and certain key employees as an incentive to achieve revenue growth and operating profit margin goals over a three-year period.  The awards are in the form of restricted stock units, which vest at the end of the three-year period if the specified sales growth and operating margin goals are achieved.  These restricted stock unit awards are considered nonvested share awards.  The restricted stock unit awards require no payment from the employee.  Fair value of the restricted stock units is determined based on the market price of the stock on the grant date.  Compensation cost is recorded equally over the three-year period in which the stock units are earned, based on a periodic determination of the probable performance outcome.  There were no vested shares at August 27, 2016 and November 28, 2015, respectively.The following table summarizes information related to restricted stock unit awards with performance conditions during the three and nine months ended August 27, 2016 and August 29, 2015:  Quarter EndedNine Months Ended  August 27, 2016August 29, 2015August 27, 2016August 29, 2015Pre-tax compensation expense $— $(709) $— $218Deferred tax benefits — 258 — (79)Excess tax benefits associated with tax deductions over the amount of compensation expense recognized in the consolidated condensed financial statements — — — —Fair value of restricted stock unit awards on date of grant — — — 5,857Fair value of restricted stock unit awards vested — — — —The following table summarizes activity for the nine months endedAugust 27, 2016 with respect to the restricted stock unit awards with performance conditions: Units WeightedAverageGrant DateFair ValueNonvested at beginning of year92,650 $63.22Granted— $—Vested— $—Surrendered(13,836) $63.22Nonvested at end of period78,814 $63.22 As of August 27, 2016, there was $4,975 of total unrecognized compensation cost related to restricted stock unit awards with performance conditions. The Company does not currently expect to recognize any of this compensation cost, based on the probable performance outcome.Directors' Restricted Stock CompensationThe incentive plans provide for grants of shares of common stock to all non-employee directors for annual incentive awards, and for grants of shares of common stock to all non-employee directors equal to a one-year annual retainer in lieu of cash at the directors’ option.  The directors’ rights to the shares vest immediately on the date of grant; however, shares issued on annual retainer fees cannot be sold for a six-month period from the date of grant.  The following table summarizes information related to directors' stock compensation during the three and nine months ended August 27, 2016 and August 29, 2015, respectively:  Quarter Ended Nine Months Ended  August 27, 2016 August 29, 2015 August 27, 2016 August 29, 2015Pre-tax compensation expense $32 $114 $1,182 $994Shares of Company common stock issued under the plans — 1,909 21,306 15,261 |

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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.
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