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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)   653,831      
Issuance of common stock under stock compensation plan, net of forfeitures 0 $ 7 (7)    
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 1,011   1,011    
Vesting of restricted stock and stock units (in shares)   517      
Vesting of restricted stock and stock units (2)   (2)    
Other comprehensive income (222)     (222)  
Net Loss (8,646)       (8,646)
Ending balance (in shares) at Jun. 30, 2023   35,375,614      
Ending balance at Jun. 30, 2023 (13,412) $ 354 793,947 (5,050) (802,663)
Beginning balance (in shares) at Mar. 31, 2023   34,720,752      
Beginning balance at Mar. 31, 2023 (11,341) $ 347 793,434 (4,996) (800,126)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Issuance of common stock under stock compensation plan, net of forfeitures (in shares)   654,345      
Issuance of common stock under stock compensation plan, net of forfeitures 0 $ 7 (7)    
Stock-based compensation expense 522   522    
Vesting of restricted stock and stock units (in shares)   517      
Vesting of restricted stock and stock units (2)   (2)    
Other comprehensive income (54)     (54)  
Net Loss (2,537)       (2,537)
Ending balance (in shares) at Jun. 30, 2023   35,375,614      
Ending balance at Jun. 30, 2023 $ (13,412) $ 354 793,947 (5,050) (802,663)
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)   1,643,450      
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)   4,199,074      
Issuance of common stock under ATM program / Issuance of common stock associated with the Units offering 6,780 $ 42 6,738    
Stock-based compensation expense 1,388   1,388    
Other comprehensive income (157)     (157)  
Net Loss $ (22,096)       (22,096)
Ending balance (in shares) at Jun. 30, 2024 41,167,385 41,167,385      
Ending balance at Jun. 30, 2024 $ (49,715) $ 412 803,215 (5,016) (848,326)
Beginning balance (in shares) at Mar. 31, 2024   35,324,861      
Beginning balance at Mar. 31, 2024 (43,314) $ 353 795,687 (5,069) (834,285)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Issuance of common stock under stock compensation plan, net of forfeitures (in shares)   1,643,450      
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)   4,199,074      
Issuance of common stock under ATM program / Issuance of common stock associated with the Units offering 6,780 $ 42 6,738    
Stock-based compensation expense 807   807    
Other comprehensive income 53     53  
Net Loss $ (14,041)       (14,041)
Ending balance (in shares) at Jun. 30, 2024 41,167,385 41,167,385      
Ending balance at Jun. 30, 2024 $ (49,715) $ 412 $ 803,215 $ (5,016) $ (848,326)