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Employee Benefits (Details) - USD ($) | 3 Months Ended
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Mar. 31, 2022 | Mar. 31, 2021
Defined Benefit Plan Disclosure [Line Items] |  |
Defined contribution employee automatic contribution, percent | 6.00% |
Administrative expense | $ 0 | $ 0
Contributions, net of forfeitures, made to the defined contribution plan | $ 3,306,000 | 2,280,000
Profit sharing, percent of pre-tax profit paid to eligible employees on quarterly basis | 10.00% |
Profit sharing bonus plan expense | $ 2,669,000 | 2,132,000
Medical claim payments | 1,946,000 | 1,813,000
Health saving account contributions | $ 939,000 | $ 857,000
Effective January 1, 2016 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Percent of match | 175.00% |
Defined contribution employer, maximum match percent | 6.00% |

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