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Income Taxes - Federal Statutory Income Tax Rate Reconciliation (Details) | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Income Tax Disclosure [Abstract] |  |  |
Federal statutory rate | 21.00% | 21.00% | 35.00%
State income taxes, net of federal benefit | 5.00% | 6.00% | 5.00%
Remeasurement of deferred taxes | 0.00% | 0.00% | 5.00%
Domestic manufacturing deduction | 0.00% | 0.00% | (3.00%)
Excess tax benefits | (3.00%) | (2.00%) | (3.00%)
Return to provision | 1.00% | 0.00% | 0.00%
Oklahoma amended tax returns | 1.00% | 0.00% | 0.00%
Other | (1.00%) | (1.00%) | (1.00%)
Total | 20.00% | 24.00% | 28.00%

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