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Stockholder's Equity - Stock-based Compensation Expense (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |  |  |  |  |
Stock-based compensation expense | $ 15,932 | $ 10,940 | $ 43,951 | $ 34,069 |
Share-based compensation expense, capitalized in inventory |  |  | 1,600 |  | $ 1,200
NonPerformanceShares [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |  |  |  |  |
Unrecognized compensation cost related to unvested share-based compensation arrangements | 59,100 |  | $ 59,100 |  |
Unrecognized compensation cost, expected recognition period (in years) |  |  | 3 years |  |
Performance Shares |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |  |  |  |  |
Award requisite service period |  |  | 4 years 3 months |  |
Unrecognized compensation cost related to unvested share-based compensation arrangements | 27,600 |  | $ 27,600 |  |
Unrecognized compensation cost, expected recognition period (in years) |  |  | 3 years 1 month 6 days |  |
Cost of revenue |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |  |  |  |  |
Stock-based compensation expense | 884 | 1,140 | $ 2,548 | 3,315 |
Research and development |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |  |  |  |  |
Stock-based compensation expense | 2,601 | 1,201 | 7,142 | 5,115 |
Sales, general and administrative |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |  |  |  |  |
Stock-based compensation expense | $ 12,447 | $ 8,599 | $ 34,261 | $ 25,639 |

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