Geographic Data - Schedule of Financial Information by Geographic Area (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 27, 2015	Jun. 28, 2015	Mar. 29, 2015	Dec. 31, 2014	Sep. 28, 2014	Jun. 29, 2014	Mar. 30, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Net Sales from continuing operations
Net sales	$ 93,282	$ 90,646	$ 100,071	$ 98,311	$ 100,378	$ 99,957	$ 102,980	$ 100,706	$ 382,310	$ 404,021	$ 409,461
United States | Operating Segments
Net Sales from continuing operations
Net sales									238,796	234,323	223,212
Singapore | Operating Segments
Net Sales from continuing operations
Net sales									8,379	11,510	13,812
United Kingdom | Operating Segments
Net Sales from continuing operations
Net sales									0	0	28,167
China | Operating Segments
Net Sales from continuing operations
Net sales									55,825	61,683	72,509
Canada | Operating Segments
Net Sales from continuing operations
Net sales									24,519	35,145	38,061
Czech Republic | Operating Segments
Net Sales from continuing operations
Net sales									36,348	44,424	18,117
Other non-U.S. | Operating Segments
Net Sales from continuing operations
Net sales									$ 18,443	$ 16,936	$ 15,583