v3.26.1
Unaudited Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Operating activities:    
Net Income (Loss) $ (15,726) $ (9,958)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization expense 4,606 4,814
Amortization of financing lease right-of-use asset 102 102
Accretion of interest on securities (303) (491)
Non-cash lease expense 114 582
Gain on lease termination/modification 0 (450)
Stock-based compensation 1,640 2,667
Cost of leased equipment sold to customer 146 215
Change in fair value of convertible debentures 287 (5,250)
Disposal of property and equipment 34 258
Changes in operating assets and liabilities    
Accounts receivable 834 1,257
Inventory (29) 1,834
Prepaid expenses and other current assets 313 45
Other long-term assets 591 666
Accounts payable (1,028) (719)
Accrued expenses, contract liabilities, and lease liabilities, net (1,967) (1,823)
Net cash used in operating activities (10,386) (6,251)
Investing activities:    
Purchase of available for sale securities (80,131) (116,642)
Sale and maturities of available for sale securities 99,269 104,555
Net cash provided by (used in) investing activities 19,138 (12,087)
Financing activities:    
Principal payments of financing lease liability (41) (34)
Proceeds from sale of common stock and warrants 1,325 16,408
Offering expenses on sale of common stock and warrants (54) (1,023)
Proceeds from warrant and option exercises 0 9
Payments on convertible debentures (10,266) (3,000)
Net cash provided by (used in) financing activities (9,036) 12,360
Effect of exchange rates on cash and cash equivalents and restricted cash 6 (33)
Net increase (decrease) in cash and cash equivalents and restricted cash (278) (6,011)
Cash and cash equivalents and restricted cash at beginning of period 4,509 9,573
Cash and cash equivalents and restricted cash at end of period 4,231 3,562
Reconciliation of cash and cash equivalents and restricted cash reported within the condensed consolidated balance sheets to the total amounts reported on the condensed consolidated statements of cash flows    
Cash and cash equivalents 3,730 3,562
Restricted cash 501 0
Total cash and cash equivalents and restricted cash at end of period 4,231 3,562
Supplemental disclosure of cash flow information    
Cash paid for interest 600 921
Cash paid for operating lease liabilities 341 1,348
Supplemental disclosure of non-cash financing and investing activity    
Transfer of instruments and servers from inventory into property and equipment, net 275 654
Issuance of common stock for convertible debentures payable 0 350
Fees paid in common stock 0 1,584
Operating lease liabilities resulting from obtaining right-of-use assets $ 0 $ 2,966