Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Apr. 01, 2018
Income Tax Disclosure [Abstract]
Income tax (benefit) expense	$ 5,621	$ 4,420
Effective tax rate	18.30%	63.20%
Change in valuation allowance income tax benefit	$ 800
Income tax expense related to debt refinance		$ 1,800
Tax Cuts and Jobs Act of 2017, income tax expense		$ 500

Tax Cuts And Jobs Act Of 2017, Income Tax Expense (Benefit)

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

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Current period income tax expense or benefit pertaining to a gain (loss) on an extinguishment of debt.

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

+ References

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets.

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