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Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($)
$ in Thousands
Total
Common Stock [Member]
Common Stock [Member]
March 2023 Pre-Funded Warrants [Member]
Additional Paid-In Capital [Member]
Accumulated Deficit [Member]
Accumulated Other Comprehensive Income [Member]
Non-Controlling Interest [Member]
Stockholders Equity, Beginning Balance at Dec. 31, 2023 $ 12,703 $ 65   $ 284,515 $ (271,840) $ 101 $ (138)
Stockholders Equity, Beginning Balance, Shares at Dec. 31, 2023   1,285,337          
Issuance of shares related to Pre-Funded Warrants exercise     75,000        
Issuance of shares related to employee stock purchase plan 5     5      
Issuance of shares related to employee stock purchase plan, Shares   2,503          
Stock-based compensation 138     138      
Unrealized gains on available-for-sale securities 60         60  
Net income (loss) (2,423)       (2,423)    
Stockholders Equity, Ending Balance at Mar. 31, 2024 10,483 $ 65   284,658 (274,263) 161 (138)
Stockholders Equity, Ending Balance, Shares at Mar. 31, 2024   1,362,840          
Stockholders Equity, Beginning Balance at Dec. 31, 2023 $ 12,703 $ 65   284,515 (271,840) $ 101 $ (138)
Stockholders Equity, Beginning Balance, Shares at Dec. 31, 2023   1,285,337          
Issuance of shares related to Pre-Funded Warrants exercise (75,000)            
Net income (loss) $ (7,000)            
Stockholders Equity, Ending Balance at Dec. 31, 2024 $ 6,223 $ 65   285,036 (278,878)    
Stockholders Equity, Ending Balance, Shares at Dec. 31, 2024   1,364,940          
Issuance of shares related to Pre-Funded Warrants exercise 0            
Issuance of shares related to employee stock purchase plan $ 5     5      
Issuance of shares related to employee stock purchase plan, Shares   2,100          
Stock-based compensation 78     78      
Net income (loss) 2,599       2,599    
Stockholders Equity, Ending Balance at Mar. 31, 2025 $ 8,905 $ 65   $ 285,119 $ (276,279)    
Stockholders Equity, Ending Balance, Shares at Mar. 31, 2025   1,367,040