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Condensed Consolidated Statements of Stockholder's Equity - USD ($)
Common Stock
Series C convertible preferred stock
Common Stock
Series D convertible preferred stock
Common Stock
Additional Paid-in Capital
Series C convertible preferred stock
Additional Paid-in Capital
Series D convertible preferred stock
Additional Paid-in Capital
Accumulated Deficit
Accumulated Other Comprehensive income
Treasury Stock
Series C convertible preferred stock
Series D convertible preferred stock
Total
Balance at Dec. 31, 2023     $ 1,000     $ 346,536,000 $ (309,318,000) $ 32,000 $ (288,000)     $ 36,963,000
Balance (in shares) at Dec. 31, 2023     715,028                  
Stock-based compensation           160,000           160,000
Foreign currency exchange gains (losses)               (569,000)       (569,000)
Net loss             (5,165,000)         (5,165,000)
Balance at Mar. 31, 2024     $ 1,000     346,696,000 (314,483,000) (537,000) (288,000)     31,389,000
Balance (in shares) at Mar. 31, 2024     715,028                  
Balance at Dec. 31, 2023     $ 1,000     346,536,000 (309,318,000) 32,000 (288,000)     36,963,000
Balance (in shares) at Dec. 31, 2023     715,028                  
Net loss                       (21,206,000)
Balance at Sep. 30, 2024     $ 3,000     355,333,000 (330,525,000) 112,000 (288,000)     24,635,000
Balance (in shares) at Sep. 30, 2024     2,646,272                  
Balance at Dec. 31, 2023     $ 1,000     346,536,000 (309,318,000) 32,000 (288,000)     36,963,000
Balance (in shares) at Dec. 31, 2023     715,028                  
Preferred Stock conversion to Common       $ 2,000,000 $ 728,000              
Preferred Stock conversion to Common (in shares) 72,132 26,230                    
Balance at Dec. 31, 2024     $ 3,000     355,501,000 (334,971,000) (1,178,000) (288,000)     19,067,000
Balance (in shares) at Dec. 31, 2024     2,811,259                  
Balance at Mar. 31, 2024     $ 1,000     346,696,000 (314,483,000) (537,000) (288,000)     31,389,000
Balance (in shares) at Mar. 31, 2024     715,028                  
Stock-based compensation           172,000           172,000
Stock issued under "at-the-market" offering           1,839,000           1,839,000
Stock issued under "at-the-market" offering (in shares)     174,282                  
Foreign currency exchange gains (losses)               (172,000)       (172,000)
Preferred Stock conversion to Common       988,000           $ 988,000    
Preferred Stock conversion to Common (in shares) 35,523                      
Net loss             (8,316,000)         (8,316,000)
Balance at Jun. 30, 2024     $ 1,000     349,695,000 (322,799,000) (709,000) (288,000)     25,900,000
Balance (in shares) at Jun. 30, 2024     924,833                  
Stock-based compensation           177,000           177,000
Stock issued under "at-the-market" offering     $ 1,000     1,763,000           1,764,000
Stock issued under "at-the-market" offering (in shares)     395,000                  
Issuance of Common Stock and Warrants, net of issuance costs     $ 1,000     1,952,000           1,953,000
Issuance of Common Stock and Warrants, net of issuance costs ( in shares)     918,600                  
Foreign currency exchange gains (losses)               821,000       821,000
Preferred Stock conversion to Common       $ 1,018,000 $ 728,000         $ 1,018,000 $ 728,000  
Preferred Stock conversion to Common (in shares) 36,609 26,230                    
Conversion of Pre-Funded Warrants to Common (in shares)     345,000                  
Net loss             (7,726,000)         (7,726,000)
Balance at Sep. 30, 2024     $ 3,000     355,333,000 (330,525,000) 112,000 (288,000)     24,635,000
Balance (in shares) at Sep. 30, 2024     2,646,272                  
Balance at Dec. 31, 2024     $ 3,000     355,501,000 (334,971,000) (1,178,000) (288,000)     19,067,000
Balance (in shares) at Dec. 31, 2024     2,811,259                  
Stock-based compensation           100,000           100,000
Foreign currency exchange gains (losses)               654,000       654,000
Net loss             (4,324,000)         (4,324,000)
Balance at Mar. 31, 2025     $ 3,000     355,601,000 (339,295,000) (524,000) (288,000)     15,497,000
Balance (in shares) at Mar. 31, 2025     2,811,259                  
Balance at Dec. 31, 2024     $ 3,000     355,501,000 (334,971,000) (1,178,000) (288,000)     19,067,000
Balance (in shares) at Dec. 31, 2024     2,811,259                  
Net loss                       (21,743,000)
Balance at Sep. 30, 2025     $ 9,000     362,968,000 (356,714,000) 763,000 (288,000)     6,738,000
Balance (in shares) at Sep. 30, 2025     10,333,572                  
Balance at Mar. 31, 2025     $ 3,000     355,601,000 (339,295,000) (524,000) (288,000)     15,497,000
Balance (in shares) at Mar. 31, 2025     2,811,259                  
Stock-based compensation           173,000           173,000
Issuance of Common Stock and Warrants, net of issuance costs     $ 2,000     6,688,000           6,690,000
Issuance of Common Stock and Warrants, net of issuance costs ( in shares)     1,990,900                  
Conversion of Warrants to Common     $ 3,000     1,000           4,000
Conversion of Warrants to Common (in shares)     4,285,883                  
Foreign currency exchange gains (losses)               1,317,000       1,317,000
Net loss             (13,058,000)         (13,058,000)
Balance at Jun. 30, 2025     $ 8,000     362,463,000 (352,353,000) 793,000 (288,000)     10,623,000
Balance (in shares) at Jun. 30, 2025     9,088,042                  
Stock-based compensation           228,000           228,000
Stock issued under "at-the-market" offering     $ 1,000     278,000           279,000
Stock issued under "at-the-market" offering (in shares)     706,810                  
Conversion of Warrants to Common           (1,000)           (1,000)
Conversion of Warrants to Common (in shares)     538,720                  
Foreign currency exchange gains (losses)               (30,000)       (30,000)
Net loss             (4,361,000)         (4,361,000)
Balance at Sep. 30, 2025     $ 9,000     $ 362,968,000 $ (356,714,000) $ 763,000 $ (288,000)     $ 6,738,000
Balance (in shares) at Sep. 30, 2025     10,333,572