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Stock-based Compensation - Summary of Stock Options Expenses (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Total stock-based compensation -Stock Options | $ 9,823 | $ 5,329 | $ 2,864
Cost of revenue [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Total stock-based compensation -Stock Options | 158 | 178 | 180
Research and development [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Total stock-based compensation -Stock Options | 1,684 | 1,267 | 1,266
Selling, general and administrative [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Total stock-based compensation -Stock Options | $ 7,981 | $ 3,884 | $ 1,418

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