Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 30, 2019	Mar. 31, 2018
Income Tax Disclosure [Abstract]
Provision (benefit) for income taxes	$ 193	$ (678)
Pre-tax loss	121,408	$ 26,958
Income tax benefit increase	$ 900

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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