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Condensed Statements of Cash Flows - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Operating activities:    
Net loss $ (51,924) $ (27,082)
Adjustments to reconcile net loss to net cash used for operating activities:    
Depreciation, amortization, and impairment 418 571
Gain on contract termination 0 (300)
Share-based compensation 6,248 4,696
Amortization of debt issuance costs and discounts 8,246 8,015
Other, net 0 71
Changes in operating assets and liabilities:    
Trade and other receivables, net (4,413) (1,228)
Inventories (1,840) (252)
Prepaid expenses and other assets 1,383 1,083
Accounts payable 276 146
Accrued expenses and other liabilities (2,058) (2,408)
Deferred revenue (299) (12,582)
Net cash used for operating activities (43,963) (29,270)
Investing activities:    
Capital expenditures (477) (144)
Net cash used for investing activities (477) (144)
Financing activities:    
Proceeds from shares issued under employee stock purchase plan 50 30
Proceeds from exercise of stock options, net 346 732
Proceeds from exercise of warrants, net 1,430 0
Repayment of debt principal including lease liabilities (21) (18)
Payments for royalty obligations (11) 0
Payments for taxes on share-based compensation (792) (1,100)
Net cash provided by financing activities 101,957 83,435
Net increase in cash and cash equivalents 57,517 54,021
Cash and cash equivalents:    
Cash and cash equivalents at beginning of period 71,546 23,872
Cash and cash equivalents at end of period 129,063 77,893
Supplemental disclosures of cash flow information:    
Cash payments for interest 4,574 5,566
Cash payments for income taxes 0 305
Non-cash investing activities: capital expenditures in Accounts Payable 40 0
Costs associated with public equity offering-ATM in Accounts Payable 265 0
At-the-market offering    
Financing activities:    
Proceeds from common stock issued under public equity offering 21,227 11,817
Public Equity Offering    
Financing activities:    
Proceeds from common stock issued under public equity offering $ 79,728 $ 71,974