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Income Taxes - Provision (Benefit) for Income Taxes from Continuing Operations (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Current: |  |  |  |  |  |  |  |  |  |  |
Federal |  |  |  |  |  |  |  |  | $ 8,844 | $ 14,020 | $ 12,637
State |  |  |  |  |  |  |  |  | 1,317 | 379 | 342
Current income tax expense (benefit) |  |  |  |  |  |  |  |  | 10,161 | 14,399 | 12,979
Deferred: |  |  |  |  |  |  |  |  |  |  |
Federal |  |  |  |  |  |  |  |  | 55 | (3,764) | (254)
State |  |  |  |  |  |  |  |  | 1,480 | 300 | 808
Deferred income tax expense (benefit) |  |  |  |  |  |  |  |  | 1,535 | (3,464) | 554
Total | $ 4,452 | $ 2,673 | $ 3,316 | $ 1,255 | $ (2,357) | $ 7,491 | $ 2,947 | $ 2,854 | $ 11,696 | $ 10,935 | $ 13,533

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