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Stockholders' Equity (Details) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Nov. 30, 2022 USD ($) preferredSharePurchaseRight $ / shares shares | Aug. 31, 2022 $ / shares | May 31, 2022 $ / shares | Feb. 28, 2022 $ / shares | Nov. 30, 2021 $ / shares | Aug. 31, 2021 $ / shares | May 31, 2021 $ / shares | Feb. 28, 2021 $ / shares | Nov. 30, 2020 $ / shares | Aug. 31, 2020 $ / shares | May 31, 2020 $ / shares | Feb. 29, 2020 $ / shares | Nov. 30, 2022 USD ($) preferredSharePurchaseRight $ / shares shares | Nov. 30, 2021 USD ($) shares | Nov. 30, 2020 USD ($) shares | Apr. 07, 2022 USD ($) shares | Jul. 08, 2021 shares | Jul. 07, 2021 shares | Jul. 17, 2014 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividend distribution, number of preferred share purchase rights for each outstanding common stock share | preferredSharePurchaseRight | 1 |  |  |  |  |  |  |  |  |  |  |  | 1 |  |  |  |  |  |
Shares included in each purchase right in the 2021 Rights Agreement | 0.01 |  |  |  |  |  |  |  |  |  |  |  | 0.01 |  |  |  |  |  |
Purchase price for right holders (per right) | $ / shares | $ 85.00 |  |  |  |  |  |  |  |  |  |  |  | $ 85.00 |  |  |  |  |  |
Calendar days after a public announcement during which rights to be exercised |  |  |  |  |  |  |  |  |  |  |  |  | 10 days |  |  |  |  |  |
Business days after the commencement of a tender or exchange offer during which rights to be exercised |  |  |  |  |  |  |  |  |  |  |  |  | 10 days |  |  |  |  |  |
Beneficially ownership in company's outstanding common stock to be held by person or group to exercise rights |  |  |  |  |  |  |  |  |  |  |  |  | 4.90% |  |  |  |  |  |
Number of common shares issued for each purchase right | 1 |  |  |  |  |  |  |  |  |  |  |  | 1 |  |  |  |  |  |
Price at which company may redeem all of the then outstanding rights (per right) | $ / shares | $ 0.001 |  |  |  |  |  |  |  |  |  |  |  | $ 0.001 |  |  |  |  |  |
Cash dividends paid per common share (in dollars per share) | $ / shares | 0.15 | $ 0.15 | $ 0.15 | $ 0.15 | $ 0.15 | $ 0.15 | $ 0.15 | $ 0.15 | $ 0.15 | $ 0.09 | $ 0.09 | $ 0.09 |  |  |  |  |  |  |
Cash dividends declared per common share (in dollars per share) | $ / shares | $ 0.15 | $ 0.15 | $ 0.15 | $ 0.15 | $ 0.15 | $ 0.15 | $ 0.15 | $ 0.15 | $ 0.15 | $ 0.09 | $ 0.09 | $ 0.09 |  |  |  |  |  |  |
Value of treasury stock acquired | $ |  |  |  |  |  |  |  |  |  |  |  |  | $ 15,902 | $ 12,337 | $ 9,503 |  |  |  |
Retirement of treasury stock, shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 23,487,966 |  |  |  |
Director Plan SARs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock repurchase program, number of shares authorized to be repurchased (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 680,000
Treasury Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock repurchased during period, (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,668,600 |  |  |  |  |
Stock repurchased during period, value | $ |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 188,200 |  |  |  |  |
Value of treasury stock acquired | $ |  |  |  |  |  |  |  |  |  |  |  |  | 15,902 | 12,337 | $ 9,503 |  |  |  |
Retirement of treasury stock, shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (23,488,000) |  |  |  |
July 2021 Stock Repurchase Program |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock repurchase program, number of shares authorized to be repurchased (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5,000,000 |  |
Remaining authorized number of shares available for repurchases |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 331,400 |  |  |
May 2018 Stock Repurchase Program |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Remaining authorized number of shares available for repurchases |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,193,947 |
April 2022 Stock Repurchase Program |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock repurchase program, remaining authorized repurchase amount | $ | $ 150,000 |  |  |  |  |  |  |  |  |  |  |  | $ 150,000 |  |  | $ 300,000 |  |  |
April 2022 Stock Repurchase Program | Treasury Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock repurchased during period, (in shares) |  |  |  |  |  |  |  |  |  |  |  |  | 4,927,499 |  |  |  |  |  |
Stock repurchased during period, value | $ |  |  |  |  |  |  |  |  |  |  |  |  | $ 150,000 |  |  |  |  |  |
Not Part of a Share Repurchase Program |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Value of treasury stock acquired | $ |  |  |  |  |  |  |  |  |  |  |  |  | $ 15,900 | $ 12,300 | $ 9,500 |  |  |  |

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