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Income Taxes - Components of Income Tax Expense (Benefit) (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 |  |  |  |  |  |  |  |  | $ 57,354 | $ 60,764 | $ 76,966
State |  |  |  |  |  |  |  |  | (1,344) | 8,732 | 8,589
Current Income Tax Expense (Benefit), Total |  |  |  |  |  |  |  |  | 56,010 | 69,496 | 85,555
Deferred: |  |  |  |  |  |  |  |  |  |  |
Federal |  |  |  |  |  |  |  |  | 2,804 | (10,708) | (6,189)
State |  |  |  |  |  |  |  |  | (487) | (799) | 843
Deferred Income Tax Expense (Benefit) |  |  |  |  |  |  |  |  | 2,317 | (11,507) | (5,346)
Income Tax Expense (Benefit), Total | $ 17,575 | $ 15,171 | $ 14,125 | $ 11,456 | $ 18,263 | $ 8,720 | $ 13,960 | $ 17,046 | $ 58,327 | $ 57,989 | $ 80,209

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