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Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Operating activities:    
Net loss $ (1,399) $ (6,203)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation 1 4
Stock-based compensation 1,673 392
Deconsolidation of subsidiary 4,947
Changes in lease liability 10 (32)
Changes in operating assets and liabilities:    
Prepaid expenses and other assets 1,544 3,196
Accounts payable, accrued and other current liabilities (11,079) (924)
Net cash used in operating activities (4,303) (3,567)
Investing activities:    
Purchase of property, plant and equipment
Net cash used in investing activities
Financing activities:    
Proceeds, net of issuance costs, from issuing common stock and pre-funded warrants, net 5,567 6,210
Proceeds from the exercise of stock options and warrants, net of issuance costs
Payment of preferred stock dividend (41)
Net cash provided by (used) in financing activities 5,526 6,210
Effect of exchange rate changes on cash and cash equivalents (85) (21)
Net increase (decrease) in cash and cash equivalents 1,138 2,622
Cash and cash equivalents, beginning of period 3,137 3,378
Cash and cash equivalents, end of period 4,275 6,000
Cash received during the period for:    
Interest 12 17
Research & development tax credits 3,715
Cash paid during the period for:    
Interest 5
Taxes 2
Non cash financing activities:    
Accrual of preferred stock dividends