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Stockholders’ Equity (Deficit) and Equity Incentive Plan - Summary of Share-based Compensation Expense by line item in the Condensed Consolidated Statements of Operations (Detail) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021
Class Of Stock [Line Items] |  |
Stock-based compensation expense | $ 9,507 | $ 4,994
Cost of revenue |  |
Class Of Stock [Line Items] |  |
Stock-based compensation expense | 1,042 | 299
Cost of revenue | Subscription and other platform |  |
Class Of Stock [Line Items] |  |
Stock-based compensation expense | 868 | 237
Cost of revenue | Professional services |  |
Class Of Stock [Line Items] |  |
Stock-based compensation expense | 174 | 62
Sales and marketing |  |
Class Of Stock [Line Items] |  |
Stock-based compensation expense | 3,692 | 1,692
Research and development |  |
Class Of Stock [Line Items] |  |
Stock-based compensation expense | 1,981 | 782
General and administrative |  |
Class Of Stock [Line Items] |  |
Stock-based compensation expense | $ 2,792 | $ 2,221

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