Income Taxes Schedule of Components of Income Tax Expense (Details) - USD ($)	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jul. 01, 2018	Jun. 30, 2019	Jul. 01, 2018
Income Tax Disclosure [Abstract]
Current	$ 53,000	$ 57,000	$ 65,000	$ 160,000
Deferred	(8,561,000)	279,000	(8,219,000)	38,000
Provision (benefit) for income taxes	$ (8,508,000)	$ 336,000.0	$ (8,154,000)	$ 198,000

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

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration