v3.26.1
Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Cash flows from operating activities:    
Net loss $ (8,434,000) $ (15,085,000)
Reconciliation of net loss to net cash used in operating activities    
Depreciation and ROU asset amortization 524,000 542,000
Amortization of intellectual property 30,000 36,000
Fair value of common stock issued for consulting services 0 261,000
Stock-based compensation 775,000 1,047,000
Change in fair value of warrant liability (115,000) (1,327,000)
Amortization of deferred financing costs 0 336,000
Loss on extinguishment of debt 0 639,000
Impairment and loss on disposal of property, plant and equipment 0 9,012,000
Non-cash interest income (60,000) 0
Non-cash note receivable contribution (31,000) 0
Provision for credit losses 2,496,000 0
Changes in operating assets and liabilities    
Accounts receivable 0 0
Inventory 2,000 6,000
Prepaid expenses and other current assets 57,000 23,000
Accounts payable (154,000) 91,000
Accrued expenses (1,424,000) (766,000)
Other assets and liabilities (140,000) (114,000)
Net cash used in operating activities (6,474,000) (5,299,000)
Cash flows from investing activities:    
Payments for note receivable - LION ENERGY (2,000,000) 0
Purchases of property, plant and equipment 0 (421,000)
Proceeds from sale of property, plant and equipment 0 4,347,000
Proceeds from note receivable - LINICO 0 100,000
Proceeds from refund of equipment deposit 0 1,141,000
Equipment deposits 0 (231,000)
Net cash provided by (used in) investing activities (2,000,000) 4,936,000
Cash flows from financing activities:    
Proceeds from employee stock purchase plan 621,000 0
Principal payments on notes payable 0 (4,500,000)
Principal payments on finance leases (11,000) (20,000)
Cash paid cash in lieu of fractional shares reverse split 0 0
Cash paid for tax withholdings on RSUs vesting (78,000) (67,000)
Net cash provided by (used in) financing activities 2,408,000 (1,783,000)
Net decrease in cash and cash equivalents (6,066,000) (2,146,000)
Cash and cash equivalents at beginning of period 10,810,000 4,079,000
Cash and cash equivalents at end of period 4,744,000 1,933,000
Supplemental disclosure of cash flows information    
Cash paid for income taxes 2,000 2,000
Cash paid for interest 14,000 509,000
Supplemental disclosure of non-cash transactions    
Acquisitions of property, plant and equipment included in accounts payable 0 413,000
Acquisitions of property, plant and equipment paid by prior-period deposits 0 431,000
ELOC [Member]    
Cash flows from financing activities:    
Proceeds from ELOC, net 0 69,000
ATM [Member]    
Cash flows from financing activities:    
Proceeds from ELOC, net $ 1,876,000 $ 2,735,000