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CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Current assets:    
Cash and cash equivalents $ 3,137 $ 3,378
Prepaid expenses and other current assets 537 4,066
Total current assets 3,674 7,444
Property and equipment, net 3 9
Right-of-use lease asset 5 93
Non-current deposits 412 1,259
Total assets 4,094 8,805
Current liabilities:    
Accounts payable 4,599 3,543
Accrued and other current liabilities 1,669 4,618
Total current liabilities 6,268 8,161
Lease liability 0 37
Total liabilities 6,268 8,198
Stockholders' equity (deficit):    
Common stock, $0.001 par value; 100,000,000 shares authorized at December 31, 2024 and December 31, 2023; 8,859,133 shares issued and outstanding at December 31, 2024 and 1,058,892 shares issued and outstanding at December 31, 2023 9 1
Additional paid-in capital 438,202 429,796
Accumulated other comprehensive loss (891) (908)
Accumulated deficit (439,494) (428,282)
Total stockholders' equity (deficit) (2,174) 607
Total liabilities and stockholders' equity (deficit) 4,094 8,805
6% convertible exchangeable preferred stock    
Stockholders' equity (deficit):    
Preferred stock, value 0 0
Series A convertible preferred stock    
Stockholders' equity (deficit):    
Preferred stock, value 0 0
Series A convertible preferred stock    
Stockholders' equity (deficit):    
Preferred stock, value $ 0 $ 0