XML 16 R5.htm IDEA: XBRL DOCUMENT v3.20.2
CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid-In Capital
Accumulated Deficit
Accumulated Other Comprehensive Income (Loss)
Beginning balance (in shares) at Dec. 31, 2018   42,353,301      
Beginning balance at Dec. 31, 2018 $ 242,877 $ 424 $ 732,727 $ (490,271) $ (3)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Stock-based compensation 3,750   3,750    
Issuance of common stock, net of offering costs (in shares)   6,325,000      
Issuance of common stock, net of offering costs 118,657 $ 63 118,594    
Stock plan related activity (in shares)   126,707      
Stock plan related activity 347 $ 1 346    
Unrealized gain (loss) on investments 3       3
Net loss (45,017)     (45,017)  
Ending balance (in shares) at Mar. 31, 2019   48,805,008      
Ending balance at Mar. 31, 2019 320,617 $ 488 855,417 (535,288) 0
Beginning balance (in shares) at Dec. 31, 2018   42,353,301      
Beginning balance at Dec. 31, 2018 242,877 $ 424 732,727 (490,271) (3)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net loss (76,784)        
Ending balance (in shares) at Jun. 30, 2019   48,893,451      
Ending balance at Jun. 30, 2019 294,451 $ 489 860,983 (567,055) 34
Beginning balance (in shares) at Mar. 31, 2019   48,805,008      
Beginning balance at Mar. 31, 2019 320,617 $ 488 855,417 (535,288) 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Stock-based compensation 4,933   4,933    
Stock plan related activity (in shares)   88,443      
Stock plan related activity 634 $ 1 633    
Unrealized gain (loss) on investments 34       34
Net loss (31,767)     (31,767)  
Ending balance (in shares) at Jun. 30, 2019   48,893,451      
Ending balance at Jun. 30, 2019 294,451 $ 489 860,983 (567,055) 34
Beginning balance (in shares) at Dec. 31, 2019   48,958,763      
Beginning balance at Dec. 31, 2019 230,628 $ 490 872,204 (642,082) 16
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Stock-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      
Ending balance at Mar. 31, 2020 190,573 $ 492 876,815 (686,806) 72
Beginning balance (in shares) at Dec. 31, 2019   48,958,763      
Beginning balance at Dec. 31, 2019 $ 230,628 $ 490 872,204 (642,082) 16
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Stock plan related activity (in shares) 1,547,627        
Net loss $ (91,609)        
Ending balance (in shares) at Jun. 30, 2020   53,365,003      
Ending balance at Jun. 30, 2020 247,784 $ 534 980,924 (733,691) 17
Beginning balance (in shares) at Mar. 31, 2020   49,131,150      
Beginning balance at Mar. 31, 2020 190,573 $ 492 876,815 (686,806) 72
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Stock-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      
Ending balance at Jun. 30, 2020 $ 247,784 $ 534 $ 980,924 $ (733,691) $ 17