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Income Taxes - Income Tax Expense (Benefit) Attributable to Income from Operations (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Current      
Federal $ 15,161 $ 16,391 $ 26,860
State 2,782 3,060 1,162
Total 17,943 19,451 28,022
Deferred      
Federal 2,668 2,281 14,749
State 405 73 (151)
Deferred tax expense 3,073 2,354 14,598
Federal Total 17,829 18,672 41,609
State Total 3,187 3,133 1,011
Tax expense (benefit) $ 21,016 $ 21,805 $ 42,620