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Equity Plans and Stock-Based Compensation - Stock-Based Compensation Expense (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Deferred Compensation Arrangement With Individual Share Based Payments [Line Items] |  |  |  |
Inventories | $ 892 | $ 833 | $ 1,898 | $ 1,703
Total | 12,979 | 13,518 | 27,434 | 26,532
Research and development |  |  |  |
Deferred Compensation Arrangement With Individual Share Based Payments [Line Items] |  |  |  |
Stock-based compensation expense | 2,834 | 2,881 | 5,818 | 5,546
Selling, general and administrative |  |  |  |
Deferred Compensation Arrangement With Individual Share Based Payments [Line Items] |  |  |  |
Stock-based compensation expense | 8,823 | 9,255 | 18,772 | 18,175
Cost of sales - product |  |  |  |
Deferred Compensation Arrangement With Individual Share Based Payments [Line Items] |  |  |  |
Stock-based compensation expense | $ 430 | $ 549 | $ 946 | $ 1,108

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