Accumulated Other Comprehensive Loss - Schedule of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jul. 01, 2016	Dec. 31, 2015
Accumulated Other Comprehensive Income Loss Net Of Tax [Abstract]
Foreign currency	$ (7,516)	$ (7,686)
Pension loss, net of tax of $875 in 2016, and $906 in 2015	(6,970)	(6,954)
Accumulated other comprehensive loss	(14,486)	(14,640)
Tax on pension loss	$ 875	$ 906