Segment Information (Details 2) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 35,048	$ 53,013
United States [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	30,037	47,171
Malaysia [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	5,007	5,811
Other [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 4	$ 31