Stockholders' Equity - Stock-Based Compensation Expense (Detail) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] | ||||
| Stock-based compensation expenses | $ 2,028 | $ 5,662 | $ 4,332 | $ 13,348 |
| Cost of revenues [Member] | ||||
| Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] | ||||
| Stock-based compensation expenses | 70 | 200 | 187 | 463 |
| Research and development [Member] | ||||
| Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] | ||||
| Stock-based compensation expenses | 623 | 1,551 | 1,496 | 3,161 |
| Selling and marketing [Member] | ||||
| Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] | ||||
| Stock-based compensation expenses | 264 | 557 | 533 | 1,164 |
| General and administrative [Member] | ||||
| Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] | ||||
| Stock-based compensation expenses | $ 1,071 | $ 3,354 | $ 2,116 | $ 8,560 |