Income Taxes (Details 1)	12 Months Ended
Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Income Tax Disclosure [Abstract]
Federal income tax expense at statutory rate	(34.00%)	(34.00%)	(34.00%)
State income tax, net of federal benefit	(5.30%)	(5.30%)	(5.10%)
Permanent differences	7.60%	8.40%	5.70%
Change in tax rates	0.00%	(0.30%)	0.70%
Changes of state net operating losses	1.30%	1.80%	17.40%
Change in stock options and restricted stock	(1.30%)	11.80%	0.00%
Change in valuation allowance	(23.10%)	16.40%	13.70%
Remeasurement of deferred taxes asset / liability	53.40%	0.00%	0.00%
Other	1.40%	1.20%	1.80%
Effective Tax Rate	0.00%	0.00%	0.20%

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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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Percentage 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 changes in the valuation allowance for deferred tax assets.

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Percentage of the difference, between reported income tax expense (benefit) and the expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations, that is attributable to tax exempt income, equity in earnings (loss) of an unconsolidated subsidiary, minority interest income (expense), tax holiday, disposition of a business, disposition of an asset, repatriation of foreign earnings, repatriation of foreign earnings jobs creation act of 2004, change in enacted tax rate, prior year income taxes, change in deferred tax asset valuation allowance, and other adjustments.

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Percentage 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 applicable to state and local income tax expense (benefit), net of federal tax expense (benefit).

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