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Income Taxes Components of Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Current: |  |  |
Federal | $ 21,651 | $ 3,723 | $ 50
State | 7,088 | 3,924 | (1,146)
Deferred: |  |  |
Federal | 6,119 | 16,109 | 28,493
State | (1,316) | (484) | (2,426)
Income Tax Expense (Benefit) | $ 33,542 | $ 23,272 | $ 24,971

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