Income Taxes - Income Tax Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation [Abstract]
Federal statutory tax on earnings before income taxes	$ 39,231	$ 26,782	$ 29,928
State income taxes, net of federal income tax benefit	1,772	1,388	1,514
Non-deductible expense	2,629	999	723
Non-deductible acquisition-related charges	6,567	1,339	0
Accruals and settlements related to tax audits	181	529	(395)
Change in effective state tax rates	93	(401)	(383)
Manufacturing deduction	(1,960)	0	0
Tax credits and incentives	(999)	(1,209)	(663)
Other	(622)	734	(251)
Income Tax Expense (Benefit), Continuing Operations	$ 46,892	$ 30,161	$ 30,473

Income Tax Reconcilation, Deductions, Non-deductible Lobbying and Contributions

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Income Tax Reconcilation, Deductions, Non-deductible Acquisition Related Charges

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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-Publisher FASB
-Name Accounting Standards Codification
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Amount of the difference between reported income tax expense (benefit) and the expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to deduction for qualified production activity.

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