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Income Taxes - Effective Income Tax Rate Reconciliation (Details) | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Income Tax Disclosure [Abstract] |  |  |
Taxes at statutory rate | 21.00% | 21.00% | 21.00%
State taxes, net of federal benefit | 5.60% | 5.60% | 5.30%
Foreign tax rate differential | 0.10% | 0.30% | 0.30%
Executive compensation | 2.10% | 2.40% | 0.60%
Other permanent differences | (0.40%) | 0.10% | 0.70%
Prior year tax adjustments | 1.50% | (1.10%) | (1.00%)
Unrecognized tax benefits | (0.50%) | 1.00% | (0.20%)
Valuation allowance | 1.30% | 1.60% | 1.10%
Equity-based compensation | (1.00%) | (3.80%) | (3.60%)
Tax credits | (0.80%) | (0.70%) | (0.60%)
Taxes at effective rate | 28.90% | 26.40% | 23.60%

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