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Employee Benefit and Stock Plans (Stock Based Compensation Expense) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Nov. 30, 2021 | Nov. 30, 2020 | Nov. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Stock-based compensation expense related to stock option grants | $ 28,904 | $ 21,531 | $ 18,312
Stock options |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Stock-based compensation expense related to stock option grants | 0 | 0 | 189
Restricted stock |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Stock-based compensation expense related to stock option grants | 7,139 | 6,993 | 6,080
PSUs |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Stock-based compensation expense related to stock option grants | 19,512 | 13,069 | 10,742
Director awards |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Stock-based compensation expense related to stock option grants | $ 2,253 | $ 1,469 | $ 1,301

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