Segment Reporting (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 02, 2016	Mar. 28, 2015	Jan. 02, 2016
Net sales
Net sales	$ 51,028	$ 54,386
Total assets
Total assets	253,383		$ 241,540
Long-lived assets
Long-lived assets	83,925		84,522
Americas [Member]
Net sales
Net sales	24,715	25,889
Total assets
Total assets	178,369		168,662
Long-lived assets
Long-lived assets	72,152		72,529
EMEA [Member]
Net sales
Net sales	15,677	16,613
Total assets
Total assets	58,328		56,720
Long-lived assets
Long-lived assets	7,591		7,923
Asia/Pacific [Member]
Net sales
Net sales	10,636	$ 11,884
Total assets
Total assets	16,686		16,158
Long-lived assets
Long-lived assets	$ 4,182		$ 4,070