Annual report pursuant to Section 13 and 15(d)

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

v3.22.0.1
Classification of Compensation Expense Associated with Share-Based Payments (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Allocated Share-based Compensation Expense $ 1,662 $ 3,370 $ 2,742
Cost of Revenue      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Allocated Share-based Compensation Expense 156 297 293
Sales and Marketing      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Allocated Share-based Compensation Expense 367 789 557
General and Administrative      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Allocated Share-based Compensation Expense 820 2,042 1,662
Engineering and Development      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Allocated Share-based Compensation Expense $ 319 $ 242 $ 230