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Equity-Based Compensation (Summary of Compensation Expense Connection with Awards) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Expense recognized under the Prior Plan | $ 29 | $ 40 | $ 192
Expense recognized under the Non-Employee Directors Plan | 840 | 760 | 570
Total stock compensation expense | 8,652 | 8,173 | 12,570
Tax benefits recognized related to stock compensation expense | 2,189 | 2,272 | 3,136
2015 Plan |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Expense recognized under the Plan | 1,186 | 1,932 | 5,077
2018 Plan |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Expense recognized under the Plan | $ 6,597 | $ 5,441 | $ 6,731

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