Summary of Significant Accounting Policies Revenue Recognition (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Jan. 02, 2016	Jan. 03, 2015	Dec. 28, 2013
Accounting Policies [Abstract]
Revenue Recognition, Sales Returns Reserve Liability	$ (1,358)	$ (1,333)	$ (1,169)	$ (1,570)