Restructuring and Impairment Charges (Schedule of Restructuring Reserve by Type of Cost) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Jan. 02, 2016	Jan. 03, 2015
Restructuring Reserve [Roll Forward]
Restructuring reserve at beginning of period	$ 221	$ 1,213	$ 55
Restructuring charges	5,229	505	3,638
Cash payments	(2,746)	(1,497)	(2,480)
Restructuring reserve at end of period	2,704	221	1,213
Severance Costs
Restructuring Reserve [Roll Forward]
Restructuring reserve at beginning of period	206	1,213	49
Restructuring charges	3,883	(750)	2,933
Cash payments	(1,385)	(257)	(1,769)
Restructuring reserve at end of period	2,704	206	1,213
Facility Termination & Other Costs
Restructuring Reserve [Roll Forward]
Restructuring reserve at beginning of period	15	0	6
Restructuring charges	1,346	1,255	705
Cash payments	(1,361)	(1,240)	(711)
Restructuring reserve at end of period	$ 0	$ 15	$ 0