Income Taxes Deferred Tax Asset (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Jan. 02, 2016
Valuation Allowance [Line Items]
Deferred Tax Assets, Net, Noncurrent	$ 3,862	$ 4,321
Non current deferred income tax liabilities	(2,263)	(269)
Deferred Tax Assets, Net	$ 1,599	$ 4,052