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Consolidated Statements of Stockholders' Deficit (Unaudited) - USD ($)
shares in Thousands, $ in Thousands
Preferred Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
AOCI Attributable to Parent [Member]
Total
Balance (in shares) at Dec. 31, 2023 40,966        
Balance at Dec. 31, 2023 $ 41 $ 264,058 $ (475,405) $ (5,671) $ (216,977)
Issuance of common stock (in shares) 1,523        
Issuance of common stock $ 2 5,511 0 0 5,513
Stock options exercised (in shares) 14        
Stock options exercised $ 0 36 0 0 36
Stock-based compensation $ 0 2,969 0 0 2,969
Issuance and exercise of warrants (in shares) 113        
Issuance and exercise of warrants $ 0 593 0 0 593
Foreign currency translation loss 0 0 0 (44) (44)
Net loss 0 0 (24,231) 0 (24,231)
Foreign currency translation loss $ 0 0 0 (44) (44)
Balance (in shares) at Mar. 31, 2024 42,616        
Balance at Mar. 31, 2024 $ 43 273,167 (499,636) (5,715) (232,141)
Balance (in shares) at Dec. 31, 2024 51,139        
Balance at Dec. 31, 2024 $ 51 305,329 (562,942) (6,366) (263,928)
Issuance of common stock (in shares) 2,739        
Issuance of common stock $ 3 5,084 0 0 5,087
Stock options exercised (in shares) 51        
Stock options exercised $ 0 50 0 0 50
Stock-based compensation $ 0 2,308 0 0 2,308
Issuance and exercise of warrants (in shares) 113        
Issuance and exercise of warrants $ 0 304 0 0 304
Foreign currency translation loss 0 0 0 13 13
Net loss 0 0 (24,529) 0 (24,529)
Foreign currency translation loss $ 0 0 0 13 13
Balance (in shares) at Mar. 31, 2025 54,042        
Balance at Mar. 31, 2025 $ 54 $ 313,075 $ (587,471) $ (6,353) $ (280,695)