Operating Segments - Summary of Net Sales by Geographic Area (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Total Net sales	$ 8,380	$ 7,757
Electronic Devices [Member]
Total Net sales	6,285	5,162
Communications Equipment [Member]
Total Net sales	$ 2,095	$ 2,595