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Defined Contribution Plan (Narrative) (Details) | 12 Months Ended
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Dec. 31, 2023 USD ($) item | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
Defined Contribution Plan [Abstract] |  |  |
Defined Benefit Plan, Vesting Term | 3 months |  |
Defined Benefit Plan, Minimum Age Requirement | item | 21 |  |
Discretionary matching contribution company percentage | 75.00% |  |
Discretionary matching contribution, employee's contribution, maximum | $ 4,000 |  |
Company matching contributions | $ 3,400,000 | $ 3,200,000 | $ 2,900,000

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