Federal and State Income Taxes (Details Narrative) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2017	Jun. 25, 2016	Jul. 01, 2017	Jun. 25, 2016
Income tax benefits likelihood percentage of description			greater than 50 percent likelihood
Total income tax benefit	$ 392	$ 95	$ (467)	$ (903)
Effective income tax rate, percent			20.90%	27.70%
Effective income tax rate reconciliation, at federal statutory income tax rate, percent			35.00%
Tax expense partially offset by adjustments			22.00%
Foreign Income Tax [Member]
Effective income tax rate, percent			11.00%
Stock Options [Member]
Total income tax benefit	$ 391