Annual report pursuant to Section 13 and 15(d)

Segment Information - Net Sales by Market (Details)

v3.7.0.1
Segment Information - Net Sales by Market (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Segment Reporting Information [Line Items]      
Net sales $ 287,728 $ 264,860 $ 124,590
United States      
Segment Reporting Information [Line Items]      
Net sales 4,100 3,246 1,438
Canada      
Segment Reporting Information [Line Items]      
Net sales 1,809 2,746 1,374
Hong Kong      
Segment Reporting Information [Line Items]      
Net sales 263,482 245,737 111,028
China      
Segment Reporting Information [Line Items]      
Net sales 9,086 4,425 1,538
Taiwan      
Segment Reporting Information [Line Items]      
Net sales 6,213 5,965 4,628
South Korea      
Segment Reporting Information [Line Items]      
Net sales 691 1,129 1,009
Commonwealth of Independent States (Russia, Kazakhstan and Ukraine)      
Segment Reporting Information [Line Items]      
Net sales 858 1,139 3,113
Europe [Member]      
Segment Reporting Information [Line Items]      
Net sales 1,234 382 373
Other foreign countries      
Segment Reporting Information [Line Items]      
Net sales $ 255 $ 91 $ 89