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Income Taxes - Components of the Company's Income Tax Expense (Benefit) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current taxes:
Federal	$ 23,700	$ 39,569	$ 34,003
State	7,083	5,914	5,308
Deferred taxes	3,155	4,383	(2,048)
Total income taxes	$ 33,938	$ 49,866	$ 37,263

X

- Definition

Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

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