Restructuring Costs (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 02, 2016	Jul. 04, 2015	Jul. 02, 2016	Jul. 04, 2015
Distribution [Member]
Restructuring Reserve [RollForward]
Balance at the beginning of the period	$ 1,356	$ 0	$ 1,654	$ 0
Increase	74		74
Accretion of related lease obligations	14	0	14	0
Payments	(324)	0	(622)	0
Balance at the end of the period	1,120	0	1,120	0
Manufacturing [Member]
Restructuring Reserve [RollForward]
Balance at the beginning of the period	925	1,710	1,147	1,960
Increase	0		0
Accretion of related lease obligations	116	38	231	152
Payments	(144)	(121)	(481)	(485)
Balance at the end of the period	897	1,627	897	1,627
Facility Closing [Member]
Restructuring Reserve [RollForward]
Balance at the beginning of the period	2,281	1,710	2,801	1,960
Increase	74		74
Accretion of related lease obligations	130	38	245	152
Payments	(468)	(121)	(1,103)	(485)
Balance at the end of the period	$ 2,017	$ 1,627	$ 2,017	$ 1,627