Quarterly report pursuant to Section 13 or 15(d)

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

v3.21.2
Classification of Compensation Expense Associated with Share-Based Payments (Detail) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Allocated Share-based Compensation Expense $ 192 $ 847 $ 1,488 $ 2,367
Cost of Revenue        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Allocated Share-based Compensation Expense 25 79 138 208
Sales and Marketing        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Allocated Share-based Compensation Expense 62 183 291 571
General and Administrative        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Allocated Share-based Compensation Expense 61 517 777 1,424
Engineering and Development        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Allocated Share-based Compensation Expense $ 44 $ 68 $ 282 $ 164