Income Taxes (Income Tax Reconciliation, Narrative) (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
Jun. 30, 2018	Jul. 01, 2017	Dec. 30, 2017
Income Tax Disclosure [Abstract]
Federal Statutory Income Tax Rate			35.00%
Federal Statutory Income Tax Rate Effective January 1, 2018	21.00%
Effective income tax rate	3.80%	38.60%
Stock-based compensation		$ 164
Deferred Tax Liabilities, Net	$ 1,120		$ 1,105

Federal Statutory Income Tax Rate Effective January 1, 2018

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Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences without jurisdictional netting.

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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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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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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 nondeductible equity-based compensation costs.

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