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CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (UNAUDITED) - USD ($)
$ in Thousands
Total
Public Offerings, Net of Underwriting Discounts and Commissions and Offering Cost [Member]
Common Stock [Member]
Common Stock [Member]
Public Offerings, Net of Underwriting Discounts and Commissions and Offering Cost [Member]
Additional Paid-In Capital [Member]
Additional Paid-In Capital [Member]
Public Offerings, Net of Underwriting Discounts and Commissions and Offering Cost [Member]
Accumulated Deficit [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Beginning balance at Dec. 31, 2021 $ 316,201   $ 4,481   $ 787,869   $ (466,928) $ (9,221)
Beginning balance, shares at Dec. 31, 2021     43,467,052          
Exercise of stock options and vesting of restricted stock units 879   $ 8   871      
Exercise of stock options and vesting of restricted stock units, shares     82,273          
Stock-based compensation 5,334       5,334      
Currency translation adjustment (6,048)             (6,048)
Net loss (18,893)           (18,893)  
Ending balance at Mar. 31, 2022 297,473   $ 4,489   794,074   (485,821) (15,269)
Ending balance, shares at Mar. 31, 2022     43,549,325          
Beginning balance at Dec. 31, 2021 316,201   $ 4,481   787,869   (466,928) (9,221)
Beginning balance, shares at Dec. 31, 2021     43,467,052          
Currency translation adjustment (45,444)              
Net loss (49,222)              
Ending balance at Sep. 30, 2022 298,777   $ 4,750   864,842   (516,150) (54,665)
Ending balance, shares at Sep. 30, 2022     46,302,877          
Beginning balance at Mar. 31, 2022 297,473   $ 4,489   794,074   (485,821) (15,269)
Beginning balance, shares at Mar. 31, 2022     43,549,325          
Issuance of common stock   $ 47,925   $ 220   $ 47,705    
Issuance of common stock, shares       2,298,906        
Exercise of stock options and vesting of restricted stock units 184   $ 2   182      
Exercise of stock options and vesting of restricted stock units, shares     18,589          
Stock-based compensation 6,662       6,662      
Currency translation adjustment (19,921)             (19,921)
Net loss (5,714)           (5,714)  
Ending balance at Jun. 30, 2022 326,609   $ 4,711   848,623   (491,535) (35,190)
Ending balance, shares at Jun. 30, 2022     45,866,820          
Issuance of common stock   9,583   $ 38   9,545    
Issuance of common stock, shares       421,940        
Exercise of stock options and vesting of restricted stock units 150   $ 1   149      
Exercise of stock options and vesting of restricted stock units, shares     14,117          
Stock-based compensation 6,525       6,525      
Currency translation adjustment (19,475)             (19,475)
Net loss (24,615)           (24,615)  
Ending balance at Sep. 30, 2022 298,777   $ 4,750   864,842   (516,150) (54,665)
Ending balance, shares at Sep. 30, 2022     46,302,877          
Beginning balance at Dec. 31, 2022 247,055   $ 4,751   870,874   (598,122) (30,448)
Beginning balance, shares at Dec. 31, 2022     46,310,589          
Exercise of stock options and vesting of restricted stock units 217   $ 3   214      
Exercise of stock options and vesting of restricted stock units, shares     30,592          
Stock-based compensation 5,750       5,750      
Currency translation adjustment 4,242             4,242
Net loss (39,741)           (39,741)  
Ending balance at Mar. 31, 2023 217,523   $ 4,754   876,838   (637,863) (26,206)
Ending balance, shares at Mar. 31, 2023     46,341,181          
Beginning balance at Dec. 31, 2022 247,055   $ 4,751   870,874   (598,122) (30,448)
Beginning balance, shares at Dec. 31, 2022     46,310,589          
Currency translation adjustment (6,985)              
Net loss (94,786)              
Ending balance at Sep. 30, 2023 393,388   $ 5,874   1,117,855   (692,908) (37,433)
Ending balance, shares at Sep. 30, 2023     57,729,180          
Beginning balance at Mar. 31, 2023 217,523   $ 4,754   876,838   (637,863) (26,206)
Beginning balance, shares at Mar. 31, 2023     46,341,181          
Issuance of common stock   63,719   $ 322   63,397    
Issuance of common stock, shares       3,272,280        
Exercise of stock options and vesting of restricted stock units 2,248   $ 23   2,225      
Exercise of stock options and vesting of restricted stock units, shares     240,198          
Stock-based compensation 6,453       6,453      
Currency translation adjustment (505)             (505)
Net loss (32,033)           (32,033)  
Ending balance at Jun. 30, 2023 257,405   $ 5,099   948,913   (669,896) (26,711)
Ending balance, shares at Jun. 30, 2023     49,853,659          
Issuance of common stock   $ 161,783   $ 771   $ 161,012    
Issuance of common stock, shares       7,840,909        
Exercise of stock options and vesting of restricted stock units 619   $ 4   615      
Exercise of stock options and vesting of restricted stock units, shares     34,612          
Stock-based compensation 7,315       7,315      
Currency translation adjustment (10,722)             (10,722)
Net loss (23,012)           (23,012)  
Ending balance at Sep. 30, 2023 $ 393,388   $ 5,874   $ 1,117,855   $ (692,908) $ (37,433)
Ending balance, shares at Sep. 30, 2023     57,729,180