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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 |  |  |

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- Definition Percentage of plan net assets invested in company common stock. + References No definition available. + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 25 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6418455&loc=d3e16701-113920 + Details
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- Definition The amount of the cost recognized during the period for defined contribution plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 + Details
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- Definition Unrecognized cost of unvested share-based compensation awards. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 20 -Section 55 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=32706628&loc=d3e11374-113907 + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition 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). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Date the equity-based award expires, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition 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). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Net number of share options (or share units) granted during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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