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Condensed Consolidated Statements of Stockholders' Deficit - USD ($)
$ in Thousands
Total
Preferred stock
Common stock
Additional paid-in capital
Accumulated deficit
Beginning balance (in shares) at Dec. 31, 2023   4,015,002      
Balance, beginning of period at Dec. 31, 2023 $ (27,065) $ 0 $ 2 $ 222,437 $ (249,504)
Balances, beginning of period (in shares) at Dec. 31, 2023     26,413,213    
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Exercise of options (in shares) [1]     (4,941)    
Exercise of options (in shares)     2,906    
Exercise of options 7     7  
Stock-based compensation 1,086     1,086  
Proceeds from sale of common stock (in shares)     350,000    
Proceeds from sale of common stock 3,141     3,141  
Net loss (13,206)       (13,206)
Ending balance (in shares) at Mar. 31, 2024   4,015,002      
Balance, end of period at Mar. 31, 2024 $ (36,037) $ 0 $ 2 226,671 (262,710)
Balances, end of period (in shares) at Mar. 31, 2024     26,758,272    
Beginning balance (in shares) at Dec. 31, 2024 3,985,002 3,985,002      
Balance, beginning of period at Dec. 31, 2024 $ (25,894) $ 0 $ 3 253,652 (279,549)
Balances, beginning of period (in shares) at Dec. 31, 2024 31,279,264   31,279,264    
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Exercise of options (in shares) 34,023   215,369    
Exercise of options $ 279     279  
Stock-based compensation 1,620     1,620  
Preferred stock conversion (in shares)   (365,000) 777,829    
Net loss $ (10,375)       (10,375)
Ending balance (in shares) at Mar. 31, 2025 3,620,002 3,620,002      
Balance, end of period at Mar. 31, 2025 $ (34,370) $ 0 $ 3 $ 255,551 $ (289,924)
Balances, end of period (in shares) at Mar. 31, 2025 32,272,462   32,272,462    
[1] Amount reflects 2,906 shares issued for option exercises and 7,847 shares returned from options exercised in 2023 to correct clerical error.