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Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($)
$ in Thousands
Total
Public Offerings
A T M Facility
Common Stock
Common Stock
Public Offerings
Common Stock
A T M Facility
Additional Paid-in Capital
Additional Paid-in Capital
Public Offerings
Additional Paid-in Capital
A T M Facility
Accumulated Other Comprehensive Loss
Accumulated Deficit
Beginning balance at Dec. 31, 2020 $ 202,961     $ 20     $ 326,046     $ (10) $ (123,095)
Beginning balance, shares at Dec. 31, 2020       19,931,660              
Issuance of common stock upon exercise of stock options 216           216        
Issuance of common stock upon exercise of stock options, shares       103,170              
Stock-based compensation 1,793           1,793        
Net loss (14,782)                   (14,782)
Other comprehensive loss 7                 7  
Ending balance at Mar. 31, 2021 190,195     $ 20     328,055     (3) (137,877)
Ending balance, shares at Mar. 31, 2021       20,034,830              
Beginning balance at Dec. 31, 2020 202,961     $ 20     326,046     (10) (123,095)
Beginning balance, shares at Dec. 31, 2020       19,931,660              
Issuance of common stock warrant in connection with term loan facility 574                    
Net loss (63,834)                    
Other comprehensive loss 16                    
Ending balance at Sep. 30, 2021 146,770     $ 20     333,673     6 (186,929)
Ending balance, shares at Sep. 30, 2021       20,104,153              
Beginning balance at Mar. 31, 2021 190,195     $ 20     328,055     (3) (137,877)
Beginning balance, shares at Mar. 31, 2021       20,034,830              
Issuance of common stock upon exercise of stock options 152           152        
Issuance of common stock upon exercise of stock options, shares       40,628              
Issuance of common stock upon ESPP purchases 83           83        
Issuance of common stock upon ESPP purchase, Shares       5,207              
Issuance of common stock warrant in connection with term loan facility 574           574        
Stock-based compensation 2,417           2,417        
Net loss (20,723)                   (20,723)
Other comprehensive loss 7                 7  
Ending balance at Jun. 30, 2021 172,705     $ 20     331,281     4 (158,600)
Ending balance, shares at Jun. 30, 2021       20,080,665              
Issuance of common stock upon exercise of stock options 78           78        
Issuance of common stock upon exercise of stock options, shares       23,488              
Stock-based compensation 2,314           2,314        
Net loss (28,329)                   (28,329)
Other comprehensive loss 2                 2  
Ending balance at Sep. 30, 2021 146,770     $ 20     333,673     6 (186,929)
Ending balance, shares at Sep. 30, 2021       20,104,153              
Ending balance at Dec. 31, 2021 125,957     $ 20     339,218     (64) (213,217)
Ending balance, shares at Dec. 31, 2021       20,317,204              
Issuance of common stock upon exercise of stock options 29           29        
Issuance of common stock upon exercise of stock options, shares       12,065              
Issuance of common stock upon vesting of restricted stock units, net, shares       22,115              
Stock-based compensation 2,512           2,512        
Net loss (25,565)                   (25,565)
Other comprehensive loss (192)                 (192)  
Ending balance at Mar. 31, 2022 102,741     $ 20     341,759     (256) (238,782)
Ending balance, shares at Mar. 31, 2022       20,351,384              
Beginning balance at Dec. 31, 2021 125,957     $ 20     339,218     (64) (213,217)
Beginning balance, shares at Dec. 31, 2021       20,317,204              
Net loss (77,424)                    
Other comprehensive loss (376)                    
Ending balance at Sep. 30, 2022 152,575     $ 44     443,612     (440) (290,641)
Ending balance, shares at Sep. 30, 2022       43,624,625              
Beginning balance at Mar. 31, 2022 102,741     $ 20     341,759     (256) (238,782)
Beginning balance, shares at Mar. 31, 2022       20,351,384              
Issuance of common stock upon ESPP purchases 43           43        
Issuance of common stock upon ESPP purchase, Shares       15,979              
Withholding taxes related to restricted stock units (69)           (69)        
Stock-based compensation 2,586           2,586        
Net loss (25,054)                   (25,054)
Other comprehensive loss (62)                 (62)  
Ending balance at Jun. 30, 2022 80,185     $ 20     344,319     (318) (263,836)
Ending balance, shares at Jun. 30, 2022       20,367,363              
Issuance of common stock and warrants   $ 88,239     $ 20     $ 88,219      
Issuance of common stock and warrants, shares         18,675,466            
Issuance of common stock     $ 8,370     $ 1     $ 8,369    
Issuance of common stock, shares           1,242,132          
Issuance of common stock upon cashless exercise of warrants       $ 3     (3)        
Issuance of common stock upon cashless exercise of warrants, shares       3,143,682              
Issuance of common stock upon exercise of warrants 53           53        
Issuance of common stock upon exercise of warrants       10,000              
Issuance of common stock upon exercise of stock options 208           208        
Issuance of common stock upon exercise of stock options, shares       114,203              
Issuance of common stock upon vesting of restricted stock units, net of withholding taxes (53)           (53)        
Issuance of common stock upon vesting of restricted stock units, net of withholding taxes, shares       71,779              
Stock-based compensation 2,500           2,500        
Net loss (26,805)                   (26,805)
Other comprehensive loss (122)                 (122)  
Ending balance at Sep. 30, 2022 $ 152,575     $ 44     $ 443,612     $ (440) $ (290,641)
Ending balance, shares at Sep. 30, 2022       43,624,625