Provision for Taxes (Details 3) - USD ($) $ in Thousands	Dec. 30, 2017	Dec. 31, 2016
Deferred Tax Assets, Net, Classification [Abstract]
Deferred income tax asset - current	$ 0	$ 1,283
Deferred income tax asset (liability) - long-term	(2,469)	(6,441)
Deferred Tax Liabilities, Net	$ (2,469)	$ (5,158)