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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Operating activities:    
Net loss $ (17,241) $ (17,243)
Adjustments to reconcile net loss to net cash used in operating activities:    
Stock-based compensation expense 8,160 10,667
Depreciation and amortization 1,777 1,911
Amortization of debt discount 505 504
Amortization of debt issuance costs 108 157
Accretion of discount on short-term investments (650) (1,754)
Retirement and impairment of property and equipment 409 4,269
Loss on extinguishment of debt 11,339  
Change in operating assets and liabilities:    
Accounts receivable (2,166) (6,902)
Inventory (16,865) (3,840)
Prepaid expenses and other assets (4,550) (3,769)
Accounts payable 308 6,948
Accrued clinical and manufacturing liabilities (5,787) 208
Accrued payroll and employee related liabilities (806) (693)
Other accrued expenses 7,052 (1,212)
Net cash used in operating activities (18,407) (10,749)
Investing activities:    
Purchases of short-term investments (38,214) (90,745)
Maturities and sales of short-term investments 59,914 99,109
Purchases of property and equipment (317) (1,068)
Proceeds from sale of property and equipment 82  
Net cash provided by investing activities 21,465 7,296
Financing activities:    
Proceeds from the sale of common stock 19,838  
Cash paid for issuance costs of stock (1,531)  
Proceeds from sale of Series A convertible preferred stock 7,862  
Proceeds from purchases under the employee stock purchase plan 587 175
Receipts for stock issued under the equity incentive plan 207 342
Net cash provided by financing activities 14,208 517
Net increase (decrease) in cash and cash equivalents 17,266 (2,936)
Cash and cash equivalents at beginning of period 25,802 28,677
Cash and cash equivalents at end of period 43,068 25,741
Supplemental disclosure of cash flow information:    
Interest paid 3,862 $ 3,088
2026 Convertible Notes    
Financing activities:    
Cash paid for extinguishment (125,000)  
Notes Payable    
Financing activities:    
Cash paid for extinguishment (25,000)  
Proceeds from notes payable issuance 108,787  
Cash paid for notes payable debt issuance cost (3,406)  
2031 Convertible Notes    
Financing activities:    
Proceeds from notes payable issuance 33,250  
Cash paid for notes payable debt issuance cost $ (1,386)