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Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Cash flows from operating activities    
Net loss $ (7,929) $ (54,153)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 1,099 629
Change in fair value of warrant liabilities 0 32,481
Amortization of discounts on investments, net (369) (706)
Stock-based compensation expense 3,006 2,677
Shares issued as payment for services 526 527
Accretion of debt discount and amortization of deferred financing costs 345 0
Receivables:    
Trade (22,487) 175
Other 144 (76)
Inventory (4,879) 0
Prepaid expenses (562) 46
Other assets 126 (56)
Accounts payable (9,513) (117)
Accrued compensation and benefits (2,272) 1,204
Other accrued liabilities 1,624 1,277
Deferred revenue (107) (138)
Lease liabilities (75) (95)
Indemnification accruals (2,476) 0
Other long-term liabilities (28) 0
Net cash used in operating activities (43,827) (16,325)
Cash flows from investing activities    
Purchases of investments (33,874) (10,408)
Sales and maturities of investments 55,099 4,573
Purchases of property, plant and equipment (258) (622)
Net cash provided by (used in) investing activities 20,967 (6,457)
Cash flows from financing activities    
Payment of issuance cost related to 2024 public offering of shares 0 (355)
Payments to taxing authorities in connection with shares directly withheld from employees (146) (474)
Proceeds from stock option exercises 255 150
Net cash provided by (used in) financing activities 109 (679)
Effect of exchange rate changes on cash, cash equivalents, and restricted cash (3) 2
Net decrease in cash, cash equivalents, and restricted cash (22,754) (23,459)
Cash, cash equivalents, and restricted cash    
Beginning of period 30,234 29,517
End of period 7,480 6,058
Supplemental disclosure of cash flow information    
Cash paid during the period for interest 2,563 0
Significant noncash activities    
Accrued compensation paid in equity 3,371 0
Purchases of property and equipment included in accounts payable and other accrued liabilities 198 866
Issuance costs included in accounts payable and other accrued liabilities $ 0 $ 537