Annual report pursuant to Section 13 and 15(d)

Intangible Assets - Summary of Intangible Assets (Details)

v3.6.0.2
Intangible Assets - Summary of Intangible Assets (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Finite Lived Intangible Assets [Line Items]    
Gross carrying amount $ 1,345 $ 1,232
Accumulated amortization 1,104 1,003
Net amount $ 241 $ 229
Licenses    
Finite Lived Intangible Assets [Line Items]    
Estimated useful life of intangible asset 10 years 10 years
Gross carrying amount $ 185 $ 185
Accumulated amortization 118 100
Net amount $ 67 $ 85
Patents And Websites    
Finite Lived Intangible Assets [Line Items]    
Estimated useful life of intangible asset 5 years 5 years
Gross carrying amount $ 873 $ 873
Accumulated amortization 810 779
Net amount 63 $ 94
Commercial    
Finite Lived Intangible Assets [Line Items]    
Estimated useful life of intangible asset   2 years
Gross carrying amount 287 $ 174
Accumulated amortization 176 124
Net amount $ 111 $ 50
Commercial | Minimum    
Finite Lived Intangible Assets [Line Items]    
Estimated useful life of intangible asset 2 years  
Commercial | Maximum    
Finite Lived Intangible Assets [Line Items]    
Estimated useful life of intangible asset 3 years