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Stock-Based Compensation - Expense and Related Tax Benefit (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Stock options | $ 236 | $ 344 | $ 798 | $ 1,055
Restricted stock units | 4,430 | 5,104 | 15,883 | 16,546
Unrestricted stock awards | 218 | 217 | 735 | 650
Total stock-based compensation | 4,708 | 6,184 | 18,012 | 21,112
Related tax benefit | 1,195 | 1,159 | 4,264 | 3,840
Phantom Share Units (PSUs) [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Phantom stock units | $ (176) | $ 519 | $ 596 | $ 2,861

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