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Income taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | --- | ---
Deferred tax assets: |  |  |
Net operating loss carryforwards | $ 147,973 | $ 80,541 |
Tax credits | 10,929 | 10,178 |
Deferred revenue | 6,322 | 2,412 |
Amortization | 0 | 645 |
Stock-based compensation | 4,539 | 3,808 |
Inventory | 4,092 | 1,069 |
Capitalized R&D costs | 16,784 | 13,753 |
Lease liabilities | 8,802 | 9,093 |
Other deferred tax assets | 653 | 497 |
Non deductible interest 163 | 3,839 | 0 |
Accrual and reserves | 5,107 | 1,876 |
Gross deferred tax assets | 209,040 | 123,872 |
Less: valuation allowances | (177,108) | (118,663) | $ (110,082)
Total deferred tax assets | 31,932 | 5,209 |
Deferred tax liabilities: |  |  |
Right-of-use assets | (3,927) | (3,970) |
Depreciation | (1,474) | (1,137) |
Amortization acquired intangibles | (26,702) | (831) |
Other deferred tax liabilities | (273) | (71) |
Total deferred tax liabilities | 32,376 | 6,009 |
Net deferred tax liabilities | $ (444) | $ (800) |

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