XML 16 R5.htm IDEA: XBRL DOCUMENT v3.21.2
CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($)
$ in Thousands
Total
Common Stock
Treasury Stock
Additional Paid-In Capital
Accumulated Deficit
Accumulated Other Comprehensive Income (Loss)
Beginning balance (in shares) at Dec. 31, 2019   48,958,763 0      
Beginning balance at Dec. 31, 2019 $ 230,628 $ 490 $ 0 $ 872,204 $ (642,082) $ 16
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Share-based compensation 4,451     4,451    
Stock plan related activity (in shares)   172,387        
Stock plan related activity 162 $ 2   160    
Unrealized gain (loss) on investments 56         56
Net loss (44,724)       (44,724)  
Ending balance (in shares) at Mar. 31, 2020   49,131,150 0      
Ending balance at Mar. 31, 2020 190,573 $ 492 $ 0 876,815 (686,806) 72
Beginning balance (in shares) at Dec. 31, 2019   48,958,763 0      
Beginning balance at Dec. 31, 2019 230,628 $ 490 $ 0 872,204 (642,082) 16
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net loss (127,652)          
Ending balance (in shares) at Sep. 30, 2020   56,174,932 0      
Ending balance at Sep. 30, 2020 291,585 $ 562 $ 0 1,060,755 (769,734) 2
Beginning balance (in shares) at Mar. 31, 2020   49,131,150 0      
Beginning balance at Mar. 31, 2020 190,573 $ 492 $ 0 876,815 (686,806) 72
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Share-based compensation 5,136     5,136    
Issuance of common stock, net of offering costs (in shares)   4,060,482        
Issuance of common stock, net of offering costs 96,512 $ 40   96,472    
Stock plan related activity (in shares)   173,371        
Stock plan related activity 2,503 $ 2   2,501    
Unrealized gain (loss) on investments (55)         (55)
Net loss (46,885)       (46,885)  
Ending balance (in shares) at Jun. 30, 2020   53,365,003 0      
Ending balance at Jun. 30, 2020 247,784 $ 534 $ 0 980,924 (733,691) 17
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Share-based compensation 5,796     5,796    
Issuance of common stock, net of offering costs (in shares)   2,552,333        
Issuance of common stock, net of offering costs 73,981 $ 25   73,956    
Stock plan related activity (in shares)   257,596 74,632      
Stock plan related activity 82 $ 3 $ (2,012) 2,091    
Retirement of treasury stock (in shares)     (74,632)      
Retirement of treasury stock     $ 2,012 (2,012)    
Unrealized gain (loss) on investments (15)         (15)
Net loss (36,043)       (36,043)  
Ending balance (in shares) at Sep. 30, 2020   56,174,932 0      
Ending balance at Sep. 30, 2020 291,585 $ 562 $ 0 1,060,755 (769,734) 2
Beginning balance (in shares) at Dec. 31, 2020   56,244,771 0      
Beginning balance at Dec. 31, 2020 295,884 $ 562 $ 0 1,067,150 (771,821) (7)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Share-based compensation 5,243     5,243    
Issuance of common stock, net of offering costs (in shares)   3,622,186        
Issuance of common stock, net of offering costs 98,200 $ 36   98,164    
Stock plan related activity (in shares)   144,249        
Stock plan related activity 2,458 $ 2   2,456    
Unrealized gain (loss) on investments 18         18
Net loss (51,272)       (51,272)  
Ending balance (in shares) at Mar. 31, 2021   60,011,206 0      
Ending balance at Mar. 31, 2021 350,531 $ 600 $ 0 1,173,013 (823,093) 11
Beginning balance (in shares) at Dec. 31, 2020   56,244,771 0      
Beginning balance at Dec. 31, 2020 $ 295,884 $ 562 $ 0 1,067,150 (771,821) (7)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Stock plan related activity (in shares) 1,914,846          
Net loss $ (144,093)          
Ending balance (in shares) at Sep. 30, 2021   61,254,693 0      
Ending balance at Sep. 30, 2021 291,438 $ 613 $ 0 1,206,742 (915,914) (3)
Beginning balance (in shares) at Mar. 31, 2021   60,011,206 0      
Beginning balance at Mar. 31, 2021 350,531 $ 600 $ 0 1,173,013 (823,093) 11
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Share-based compensation 6,113     6,113    
Stock plan related activity (in shares)   122,241        
Stock plan related activity 2,346 $ 1   2,345    
Unrealized gain (loss) on investments (10)         (10)
Net loss (39,935)       (39,935)  
Ending balance (in shares) at Jun. 30, 2021   60,133,447 0      
Ending balance at Jun. 30, 2021 319,045 $ 601 $ 0 1,181,471 (863,028) 1
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Share-based compensation 6,309     6,309    
Issuance of common stock, net of offering costs (in shares)   958,467        
Issuance of common stock, net of offering costs 19,640 $ 10   19,630    
Stock plan related activity (in shares)   162,779 66,295      
Stock plan related activity (666) $ 2 $ (1,457) 789    
Retirement of treasury stock (in shares)     (66,295)      
Retirement of treasury stock     $ 1,457 (1,457)    
Unrealized gain (loss) on investments (4)         (4)
Net loss (52,886)       (52,886) 0
Ending balance (in shares) at Sep. 30, 2021   61,254,693 0      
Ending balance at Sep. 30, 2021 $ 291,438 $ 613 $ 0 $ 1,206,742 $ (915,914) $ (3)