Restructuring (Changes in Restructuring Accruals) (Details) - Realignment of Office Furniture Facilities and Exit of Business Line [Member] $ in Thousands	6 Months Ended
	Jul. 02, 2016 USD ($)
Restructuring Reserve [Roll Forward]
Balance as of beginning of period	$ 221
Restructuring charges	1,658
Cash payments	(824)
Balance as of end of period	1,055
Severance [Member]
Restructuring Reserve [Roll Forward]
Balance as of beginning of period	206
Restructuring charges	1,196
Cash payments	(360)
Balance as of end of period	1,042
Facility Exit Costs & Other [Member]
Restructuring Reserve [Roll Forward]
Balance as of beginning of period	15
Restructuring charges	462
Cash payments	(464)
Balance as of end of period	$ 13