Employee benefit and stock plan.

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Employee benefit and stock plans.

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Percentage of plan net assets invested in company common stock.

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Reduction of plan per share capacity for grants of restricted stock and other similar full value awards.

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Reduction of plan per share capacity for grants of stock option and other similar Awards.

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Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants, Award Share Percentage

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Tax shortfall from cancellation of stock awards.

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Number of common stock held in a trust that has been set up specifically to accumulate stock for the sole purpose of distribution to participating employees but not yet earned.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 40
-Section 25
-Paragraph 12
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The amount of the cost recognized during the period for defined contribution plans.

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-Name Accounting Standards Codification
-Topic 715
-SubTopic 70
-Section 50
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Unrecognized cost of unvested share-based compensation awards.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of cash inflow from realized tax benefit related to deductible compensation cost reported on the entity's tax return for equity instruments in excess of the compensation cost for those instruments recognized for financial reporting purposes.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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Date the equity-based award expires, in CCYY-MM-DD format.

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The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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Net number of share options (or share units) granted during the period.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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-Name Staff Accounting Bulletin (SAB)
-Number Topic 14
-Section D
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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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Number of share options (or share units) exercised during the current period.

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Employee Benefit and Stock Plans (Details Textual) $ / shares in Units, $ in Thousands	12 Months Ended
	Nov. 30, 2015 USD ($) $ / shares shares	Nov. 30, 2014 USD ($) $ / shares shares	Nov. 30, 2013 USD ($) $ / shares shares	Apr. 03, 2014 shares
Employee Benefit and Stock Plans (Textual) [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures	1,262,000	1,273,647	550,000
Employee Benefit and Stock Plan (Additional Textual) [Abstract]
Exercises in period, total intrinsic value \| $	$ 400	$ 300	$ 1,200
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	76,164	36,665	118,208
Intrinsic value of stock options outstanding \| $	$ 16,400	$ 35,800	$ 32,300
Intrinsic value of stock options exercisable \| $	$ 16,400	$ 31,700	$ 25,500
Weighted average fair value of stock options granted \| $ / shares	$ 5.49	$ 5.07	$ 6.96
Tax shortfall from cancellation of stock awards \| $	$ 1,700	$ 1,200	$ 700
Excess Tax Benefit (Tax Deficiency) from Share-based Compensation, Financing Activities \| $	$ 157	$ 0	$ 0
Shares of common stock held in trust	10,135,461	10,335,461
Share Based payments award terms of Award	5 years	5 years	5 years
Stock Options
Employee Benefit and Stock Plans (Textual) [Abstract]
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition	1 year 8 months 11 days
Total unrecognized stock-based compensation expense related to unvested stock option awards \| $	$ 5,000
Restricted Stock
Employee Benefit and Stock Plans (Textual) [Abstract]
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition	3 years
Minimum period of restriction imposed on share grant lapse	3 years
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value \| $ / shares	$ 15.19	$ 15.34	$ 17.50
Outstanding at end of year, Shares	416,977	355,294	219,628
Total unrecognized stock-based compensation expense related to unvested stock option awards \| $	$ 4,700
Performance Shares
Employee Benefit and Stock Plans (Textual) [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value \| $ / shares	$ 14.92	$ 14.62	$ 16.63
Outstanding at end of year, Shares	820,209	628,209	385,049
Total unrecognized stock-based compensation expense related to unvested stock option awards \| $	$ 9,800
Director Plan SARs [Domain]
Employee Benefit and Stock Plans (Textual) [Abstract]
Outstanding at end of year, Shares	452,983	452,983	388,884
Director Stock Units [Domain]
Employee Benefit and Stock Plans (Textual) [Abstract]
Outstanding at end of year, Shares	419,962	358,404	322,379
Maximum \| Performance Shares
Employee Benefit and Stock Plans (Textual) [Abstract]
Grant, award share percentage	200.00%
Minimum \| Performance Shares
Employee Benefit and Stock Plans (Textual) [Abstract]
Grant, award share percentage	0.00%
Equity Incentive Two Thousand Fourteen Plan [Member] [Member]
Employee Benefit and Stock Plans (Textual) [Abstract]
Number of shares authorized for issuance of stock based awards to employees				4,800,000
Grant of stock option, Reduce the plan share capacity per share				1
Grant of restricted stock, Reduce the Plan share capacity per share				1.78
Employee Benefit and Stock Plan (Additional Textual) [Abstract]
Share Based payments award terms of Award	10 years
2010 Equity Incentive Plan
Employee Benefit and Stock Plans (Textual) [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures	0
Stock Appreciation Rights (SARs)
Employee Benefit and Stock Plans (Textual) [Abstract]
Minimum period of restriction imposed on share grant lapse	3 years
Outstanding at end of year, Shares	29,939	29,939	29,939
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Date	Jul. 31, 2017
Saving Plan
Employee Benefit and Stock Plans (Textual) [Abstract]
Aggregate cost related to saving plan \| $	$ 4,600	$ 3,800	$ 3,300
Net assets invested in funds consisting common stock	5.00%	6.00%	7.00%
Director Plan SARs [Domain]
Employee Benefit and Stock Plan (Additional Textual) [Abstract]
Share Based payments award terms of Award	15 years