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Condensed Statements of Cash Flows - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Cash flows from operating activities    
Net loss $ (11,101) $ (13,614)
Adjustments to reconcile net loss to net cash, cash equivalents, and restricted cash used in operating activities    
Depreciation and amortization 1,440 1,420
Accretion of lease right-of-use assets (35) (98)
Share-based compensation expense 972 2,640
Change in fair value of warrant liability, net 378  
Provision for credit losses 101 129
Accrued interest, amortization of debt issuance costs and other 309 1,064
Inventory excess and obsolescence   8
Impairment loss on intangible assets 73 68
Changes in operating assets and liabilities:    
Accounts receivable 904 (2,344)
Other current assets 215 (425)
Other long-term assets 15 (22)
Accounts payable and other accrued liabilities (1,938) (1,234)
Deferred revenue 83 (37)
Contingent consideration   (3,409)
Current and long-term operating lease liabilities (18) 543
Net cash, cash equivalents, and restricted cash used in operating activities (8,602) (15,311)
Cash flows from investing activities    
Purchase of property and equipment (74) (234)
Patent costs and intangible asset acquisition, net (63) (39)
Net cash, cash equivalents, and restricted cash used in investing activities (137) (273)
Cash flows from financing activities    
Proceeds from the issuance of common stock   625
Proceeds from issuance of common stock under employee stock purchase plan 313 282
Proceeds from exercise of stock options   3
Repayment of term loan and notes payable (7) (13)
Payment of debt issuance costs (11) (18)
Equity financing costs   (18)
Other (198) (70)
Net cash, cash equivalents, and restricted cash provided by financing activities 97 791
Net decrease in cash, cash equivalents, and restricted cash (8,642) (14,793)
Cash, cash equivalents, and restricted cash ‑ beginning of period 26,332 26,371
Cash, cash equivalents, and restricted cash ‑ end of period 17,690 11,578
Supplemental cash flow information:    
Debt issuance costs included in accounts payable and other accrued liabilities 8 13
Equity financing costs included in accounts payable and other accrued liabilities   305
Operating lease right-of-use asset obtained in exchange for lease liabilities 45 338
Finance lease right-of-use assets obtained in exchange for lease liabilities 172  
Cash paid for interest $ 1,379 1,475
Purchases of property & equipment included in accounts payable and accrued liabilities   $ 1,405