Foreign Revenues (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Significant Foreign Revenues [Abstract]
Total foreign revenues	$ 1,459	$ 1,620	$ 2,733	$ 3,076
Malaysia [Member]
Significant Foreign Revenues [Abstract]
Total foreign revenues	782	700	1,508	1,298
China [Member]
Significant Foreign Revenues [Abstract]
Total foreign revenues	94	230	157	465
All Other Foreign Countries [Member]
Significant Foreign Revenues [Abstract]
Total foreign revenues	546	484	1,007	983
Thailand [Member]
Significant Foreign Revenues [Abstract]
Total foreign revenues	$ 37	$ 206	$ 61	$ 330