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Income Taxes - Components of Income Taxes (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Current |  |  |  |  |  |  |  |  |  |  |
Federal |  |  |  |  |  |  |  |  | $ 23,786 | $ 22,658 | $ 28,380
State |  |  |  |  |  |  |  |  | 4,264 | 2,625 | 1,354
Total |  |  |  |  |  |  |  |  | 28,050 | 25,283 | 29,734
Deferred |  |  |  |  |  |  |  |  |  |  |
Federal |  |  |  |  |  |  |  |  | 17,331 | 13,369 | 22,314
State |  |  |  |  |  |  |  |  | 2,710 | 3,075 | 1,147
Revaluation of net deferred tax assets as a result of the Tax Cuts and Jobs Act |  |  |  |  |  |  |  |  | 0 | 0 | 14,486
Total |  |  |  |  |  |  |  |  | 20,041 | 16,444 | 37,947
Total income tax expense | $ 9,424 | $ 11,132 | $ 13,945 | $ 13,590 | $ 13,098 | $ 8,532 | $ 10,424 | $ 9,673 | $ 48,091 | $ 41,727 | $ 67,681

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