Annual report pursuant to Section 13 and 15(d)

Classification of Compensation Expense Associated with Share-Based Payments (Detail)

v3.21.1
Classification of Compensation Expense Associated with Share-Based Payments (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Allocated Share-based Compensation Expense $ 3,370 $ 2,742 $ 2,768
Cost of Revenue      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Allocated Share-based Compensation Expense 297 293 420
Sales and Marketing      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Allocated Share-based Compensation Expense 789 557 535
General and Administrative      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Allocated Share-based Compensation Expense 2,042 1,662 1,440
Engineering and Development      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Allocated Share-based Compensation Expense $ 242 $ 230 $ 373