Annual report pursuant to Section 13 and 15(d)

Stock-based Compensation - Compensation Expense (Details)

v3.10.0.1
Stock-based Compensation - Compensation Expense (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]    
Compensation expense $ 2,868 $ 2,414
Sales and marketing    
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]    
Compensation expense 611 485
Research and development    
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]    
Compensation expense 426 439
General and administrative    
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]    
Compensation expense 1,831 1,304
Restructuring    
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]    
Compensation expense $ 0 $ 186