Foreign Revenues (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Segment Reporting Information [Line Items]
Total foreign revenues	$ 2,617	$ 3,613
Hong Kong [Member]
Segment Reporting Information [Line Items]
Total foreign revenues	59	531
China [Member]
Segment Reporting Information [Line Items]
Total foreign revenues	851	874
Malaysia [Member]
Segment Reporting Information [Line Items]
Total foreign revenues	798	1,314
Thailand [Member]
Segment Reporting Information [Line Items]
Total foreign revenues	181	373
All other foreign countries [Member]
Segment Reporting Information [Line Items]
Total foreign revenues	$ 728	$ 521