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CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (DEFICIT) - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid-in Capital
Accumulated Other Comprehensive Income (Loss)
Retained Earnings (Accumulated Deficit)
Beginning balance (in shares) at Dec. 31, 2022   33,221,266      
Beginning balance at Dec. 31, 2022 $ (23,507) $ 332 $ 775,006 $ (4,828) $ (794,017)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Issuance of common stock under stock compensation plan, net of forfeitures (in shares)   623,711      
Issuance of common stock under stock compensation plan, net of forfeitures 0 $ 6 (6)    
Issuance of common stock under ATM program / Issuance of common stock associated with the Units offering (in shares)   1,500,000      
Issuance of common stock under ATM program / Issuance of common stock associated with the Units offering 17,954 $ 15 17,939    
Stock-based compensation expense 1,591   1,591    
Vesting of restricted stock and stock units (in shares)   517      
Vesting of restricted stock and stock units (2)   (2)    
Other comprehensive loss (244)     (244)  
Net Loss (21,908)       (21,908)
Ending balance (in shares) at Sep. 30, 2023   35,345,494      
Ending balance at Sep. 30, 2023 (26,116) $ 353 794,528 (5,072) (815,925)
Beginning balance (in shares) at Jun. 30, 2023   35,375,614      
Beginning balance at Jun. 30, 2023 (13,412) $ 354 793,947 (5,050) (802,663)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Issuance of common stock under stock compensation plan, net of forfeitures (in shares)   (30,120)      
Issuance of common stock under stock compensation plan, net of forfeitures 0 $ (1) 1    
Stock-based compensation expense 580   580    
Other comprehensive loss (22)     (22)  
Net Loss (13,262)       (13,262)
Ending balance (in shares) at Sep. 30, 2023   35,345,494      
Ending balance at Sep. 30, 2023 $ (26,116) $ 353 794,528 (5,072) (815,925)
Beginning balance (in shares) at Dec. 31, 2023 35,324,861 35,324,861      
Beginning balance at Dec. 31, 2023 $ (35,630) $ 353 795,106 (4,859) (826,230)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Issuance of common stock under stock compensation plan, net of forfeitures (in shares)   1,658,780      
Issuance of common stock under stock compensation plan, net of forfeitures 0 $ 17 (17)    
Issuance of common stock under ATM program / Issuance of common stock associated with the Units offering (in shares)   5,380,164      
Issuance of common stock under ATM program / Issuance of common stock associated with the Units offering 8,249 $ 54 8,195    
Stock-based compensation expense 2,225   2,225    
Other comprehensive loss (166)     (166)  
Net Loss $ (32,239)       (32,239)
Ending balance (in shares) at Sep. 30, 2024 42,363,805 42,363,805      
Ending balance at Sep. 30, 2024 $ (57,561) $ 424 805,509 (5,025) (858,469)
Beginning balance (in shares) at Jun. 30, 2024   41,167,385      
Beginning balance at Jun. 30, 2024 (49,715) $ 412 803,215 (5,016) (848,326)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Issuance of common stock under stock compensation plan, net of forfeitures (in shares)   15,330      
Issuance of common stock under ATM program / Issuance of common stock associated with the Units offering (in shares)   1,181,090      
Issuance of common stock under ATM program / Issuance of common stock associated with the Units offering 1,469 $ 12 1,457    
Stock-based compensation expense 837   837    
Other comprehensive loss (9)     (9)  
Net Loss $ (10,143)       (10,143)
Ending balance (in shares) at Sep. 30, 2024 42,363,805 42,363,805      
Ending balance at Sep. 30, 2024 $ (57,561) $ 424 $ 805,509 $ (5,025) $ (858,469)