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Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Cash flows from operating activities:    
Net loss $ (26,386) $ (47,678)
Adjustments to reconcile net loss to net cash used in operating activities:    
Stock option compensation expense 9,767 8,151
Depreciation expense 134 128
Warrant liability fair value adjustment 14,071 7,998
Amortization of Right-of-Use Asset 95 271
Amortization of debt discount 460 776
Interest expense accrued related to convertible notes 133 160
Interest paid related to convertible notes (847) 0
Amortization of premiums and discounts on marketable securities (587) (151)
Changes in operating assets and liabilities:    
Prepaid expenses and other assets (1,639) 1,029
Accounts receivable (10,649) 125
Inventory (3,611) (1,324)
Accounts payable and accrued expenses 479 (199)
Other liabilities, non-current (101) (537)
Net cash used in operating activities (18,681) (31,251)
Cash flows from investing activities:    
Purchases of investments (52,453) (19,651)
Maturities of investments 52,031 0
Purchase of property, plant and equipment (559) (58)
Net cash used in investing activities (981) (19,709)
Cash flows from financing activities:    
Net proceeds from private placement 6,771 22,960
Proceeds from the issuance of common stock relating to the employee stock purchase plan 250 123
Repayment of Debt (10,610) (6,313)
Proceeds from the exercise of warrants 41,317 35,004
Proceeds from the exercise of stock options 1,682 4
Net cash provided by financing activities 39,410 51,778
Foreign currency effects on cash (32) 56
Net increase in total cash 19,716 874
Total Cash, Cash Equivalents and Restricted Cash:    
Beginning of period 12,696 11,822
End of period 32,412 12,696
Cash, Cash Equivalents and Restricted Cash consisted of the following:    
Cash 32,412 12,646
Restricted Cash 0 50
Total 32,412 12,696
Cash paid during the periods for:    
Interest expense 1,236 1,459
Supplemental Disclosure of Non-Cash Investing and Financing Activities:    
Right of use assets obtained in exchange for lease obligations 1,029 84
Conversion of mezzanine equity to common shares 0 11,269
Conversion of mezzanine equity to preferred shares $ 0 $ 7,099