Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Apr. 01, 2018	Dec. 30, 2018
Income Tax Disclosure [Abstract]
Effective Income Tax Rate Reconciliation, Percent	(3.10%)	0.60%
Effective Income Tax Rate Reconciliation, Tax Credit, Other, Amount	$ 0
Operating Loss Carryforwards	89,600
Unrecognized Tax Benefits	0		$ 0
Unrecognized Tax Benefits, Interest on Income Taxes Accrued	$ 0		$ 0