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Consolidated Statements of Redeemable Convertible Preferred Stock and Stockholders' Equity (Deficit) - USD ($)
$ in Thousands
Total
Redeemable Convertible Preferred Stock
Common Stock
Additional Paid-In Capital
Accumulated Other Comprehensive Income (Loss)
Accumulated Deficit
Balance at Dec. 31, 2020 $ 76,069   $ 22 $ 390,803 $ 5 $ (314,761)
Balance (in shares) at Dec. 31, 2020     22,097,820      
Stock-based compensation expense 3,405     3,405    
Stock-based compensation expense     56,912      
Issuance of common stock from stock grants and option exercises 303     303    
Issuance of common stock from stock grants and option exercises, shares     69,975      
Issuance of common stock for public offering, net of issuance costs 49,250   $ 9 49,241    
Issuance of common stock for public offering, net of issuance costs, shares     9,185,000      
Unrealized loss on available-for-sale debt securities (5)       $ (5)  
Net loss (87,933)         (87,933)
Balance at Dec. 31, 2021 41,089   $ 31 443,752   (402,694)
Temporary Equity, Balance (in shares) at Dec. 31, 2021   0        
Balance (in shares) at Dec. 31, 2021     31,409,707      
Stock-based compensation expense 1,342     1,342    
Stock-based compensation expense     32,684      
Issuance of common stock from stock grants and option exercises 20     20    
Issuance of common stock from stock grants and option exercises, shares     47,662      
Issuance of preferred stock upon acquisition of F351 Assets   $ 33,309        
Issuance of preferred stock upon acquisition of F351 Assets, shares   12,340        
Issuance of common stock upon acquisition of F351 Assets 1,691   $ 6 1,685    
Issuance of common upon acquisition of F351 Assets, shares     6,266,521      
Cash dividends paid ($1.43 per share) (45,031)     (45,031)    
Cash dividends declared, unpaid ($0.24 per share) (7,558)     (7,558)    
CVR derivative liability (5,000)     (5,000)    
Net loss (8,242)         (8,242)
Balance at Dec. 31, 2022 $ (21,689)   $ 37 $ 389,210   $ (410,936)
Temporary Equity, Balance (in shares) at Dec. 31, 2022   12,340        
Temporary Equity, Balance at Dec. 31, 2022   $ 33,309        
Balance (in shares) at Dec. 31, 2022     37,756,574