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Compensation Plans - Schedule of Various Information (Details) - USD ($) $ / shares in Units, $ 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] |  |  |
Share-based Payment Arrangement, Expense | $ 6,017 | $ 4,178 | $ 4,032
Total unrecognized compensation cost for nonvested stock units | $ 8,200 |  |
Expected years to recognize unearned compensation | 2 years |  |
Weighted average fair value (usd per share) | $ 47,160 | $ 38,090.00 | $ 47,460
Employee Stock [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share-based Payment Arrangement, Expense | $ 735 | $ 468 | $ 364
Restricted Stock Units (RSUs) [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share-based Payment Arrangement, Expense | 3,109 | 2,613 | 1,969
Total fair value at vesting date | 2,855 | 1,702 | 1,067
Total unrecognized compensation cost for nonvested stock units | $ 4,622 | $ 3,899 | $ 3,417
Expected years to recognize unearned compensation | 1 year 10 months 24 days | 1 year 10 months 24 days | 1 year 10 months 24 days
Stock Plan for Non-Management Directors |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number of shares issued | 12,998,000 | 15,901,000 | 11,382,000
Weighted average fair value (usd per share) | $ 46.05 | $ 30.28 | $ 41.63

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