Annual report pursuant to Section 13 and 15(d)

Segment Information - Long Lived Assets (Details)

v3.8.0.1
Segment Information - Long Lived Assets (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Segment Reporting Information [Line Items]    
Long-lived assets $ 1,149 $ 1,388
United States    
Segment Reporting Information [Line Items]    
Long-lived assets 648 763
Hong Kong    
Segment Reporting Information [Line Items]    
Long-lived assets 78 140
China    
Segment Reporting Information [Line Items]    
Long-lived assets 112 199
Other foreign countries    
Segment Reporting Information [Line Items]    
Long-lived assets $ 311 $ 286