v3.26.1
Consolidated Statements of Cash Flows - USD ($)
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Operating activities:    
Net Income (Loss) $ (26,395,000) $ (112,017,000)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization expense 9,527,000 14,022,000
Inventory write-offs 0 7,231,000
Amortization of financing lease right-of-use asset 204,000 204,000
Accretion of interest on securities (976,000) (1,316,000)
Net realized loss on investments 0 14,000
Non-cash lease expense 893,000 122,000
Gain on lease modification (450,000) (73,000)
Stock-based compensation 4,534,000 9,736,000
Cost of leased equipment sold to customer 704,000 361,000
Change in fair value of contingent consideration 0 (10,890,000)
Change in fair value of convertible debentures, convertible notes payable and option liability (5,158,000) (8,118,000)
Loss on issuance of convertible debentures 0 1,890,000
Gain on High Trail extinguishment 0 (3,965,000)
Loss on extinguishment of convertible debentures payable 0 7,341,000
Disposal of internal-use software 0 1,293,000
Intangible assets and other long-lived assets impairment 0 17,850,000
Long-lived assets held for sale impairment 0 425,000
Right-of-use-asset impairment 0 1,407,000
Disposal of property and equipment 258,000 1,404,000
Changes in operating assets and liabilities    
Accounts receivable (448,000) 4,139,000
Inventory 4,916,000 (587,000)
Prepaid expenses and other current assets (2,062,000) 1,583,000
Other long-term assets 60,000 4,678,000
Accounts payable (1,372,000) (3,420,000)
Accrued expenses, contract liabilities, and lease liabilities, net (580,000) (2,236,000)
Net cash used in operating activities (16,345,000) (68,922,000)
Investing activities:    
Purchases of property and equipment 0 (103,000)
Purchase of available for sale securities (241,879,000) (233,021,000)
Sale and maturities of available for sale securities 229,132,000 306,963,000
Net cash provided by (used in) investing activities (12,747,000) 73,839,000
Financing activities:    
Principal payments of financing lease liability (71,000) (58,000)
Proceeds from sale of common stock and warrants 31,098,000 44,433,000
Offering expenses on sale of common stock and warrants (2,122,000) (2,953,000)
Proceeds from sale of common stock under employee stock purchase plan 0 11,000
Proceeds from warrant and option exercises 9,000 4,000
Proceeds from issuance of convertible debentures 0 18,000,000
Payments on High Trail notes 0 (61,000,000)
Payments on convertible debentures (4,875,000) (5,000,000)
Debt issuance costs on sale of convertible debentures 0 (1,747,000)
Payments of retirement fees for redemption of High Trail notes 0 (5,375,000)
Net cash provided by (used in) financing activities 24,039,000 (13,685,000)
Effect of exchange rates on cash and cash equivalents and restricted cash (11,000) (7,000)
Net decrease in cash and cash equivalents and restricted cash (5,064,000) (8,775,000)
Cash and cash equivalents and restricted cash at beginning of period 9,573,000 18,348,000
Cash and cash equivalents and restricted cash at end of period 4,509,000 9,573,000
Reconciliation of cash and cash equivalents and restricted cash reported within the consolidated balance sheets to the total amounts reported on the consolidated statements of cash flows    
Cash and cash equivalents 2,990,000 9,173,000
Money market funds classified as restricted cash and investments 1,519,000 0
Restricted cash 0 400,000
Total cash and cash equivalents and restricted cash at end of period 4,509,000 9,573,000
Supplemental disclosure of cash flow information    
Cash paid for interest 1,674,000 10,653,000
Cash paid for operating lease liabilities 2,410,000 2,754,000
Supplemental disclosure of non-cash financing and investing activity    
Transfer of instruments and servers from inventory into property and equipment, net 757,000 5,291,000
Issuance of common stock for convertible debentures payable 350,000 0
Accrued liability for fees to be paid in common stock 0 1,584,000
Fees paid in common stock 1,584,000 0
Operating lease liabilities resulting from obtaining right-of-use assets 2,966,000 0
Non-cash Fill-Up Amount $ 0 $ 491,000