Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs (Details)

v3.8.0.1
Stock-Based Compensation - Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]    
Total stock-based compensation expense $ 60 $ 88
Cost of Revenue [Member]    
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]    
Total stock-based compensation expense 5 4
Research and Development [Member]    
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]    
Total stock-based compensation expense 26 29
General and Administrative [Member]    
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]    
Total stock-based compensation expense 23 38
Selling and Marketing [Member]    
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]    
Total stock-based compensation expense 6 15
Capitalized into Inventory [Member]    
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]    
Total stock-based compensation expense $ 2