XML 73 R60.htm IDEA: XBRL DOCUMENT v3.10.0.1
Stock-Based Compensation - Components of Stock-based Compensation Expense (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]      
Total $ 10,361 $ 6,846 $ 7,266
Cost of revenue      
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]      
Total 282 290 193
Research and development      
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]      
Total 3,258 1,797 1,820
Sales and marketing      
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]      
Total 1,637 1,299 1,052
General and administrative      
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]      
Total $ 5,184 $ 3,460 $ 4,201