XML 55 R5.htm IDEA: XBRL DOCUMENT v3.19.3
Condensed Consolidated Statements of Changes in Stockholders' Equity - USD ($)
$ in Thousands
Total
Common Stock [Member]
Additional Paid-in Capital [Member]
Accumulated Deficit [Member]
Accumulated Other Comprehensive Loss [Member]
Beginning balance at Dec. 31, 2017 $ 78,217 $ 27 $ 367,825 $ (289,577) $ (58)
Beginning balance, shares at Dec. 31, 2017   27,489,457      
Issuance of common stock upon exercise of stock options and employee stock purchase plan 261 $ 1 260    
Issuance of common stock upon exercise of stock options and employee stock purchase plan, shares   63,893      
Issuance of restricted stock units, shares   5,533      
Stock-based compensation expense 2,466   2,466    
Unrealized gain (loss) on marketable securities 9       9
Net loss (15,956)     (15,956)  
Ending balance at Mar. 31, 2018 64,997 $ 28 370,551 (305,533) (49)
Ending balance, shares at Mar. 31, 2018   27,558,883      
Beginning balance at Dec. 31, 2017 78,217 $ 27 367,825 (289,577) (58)
Beginning balance, shares at Dec. 31, 2017   27,489,457      
Net loss (46,798)        
Ending balance at Sep. 30, 2018 103,937 $ 37 440,303 (336,375) (28)
Ending balance, shares at Sep. 30, 2018   36,865,817      
Beginning balance at Mar. 31, 2018 64,997 $ 28 370,551 (305,533) (49)
Beginning balance, shares at Mar. 31, 2018   27,558,883      
Issuance of common stock upon exercise of stock options and employee stock purchase plan 86   86    
Issuance of common stock upon exercise of stock options and employee stock purchase plan, shares   15,643      
Issuance of restricted stock units, shares   4,463      
Stock-based compensation expense 2,671   2,671    
Unrealized gain (loss) on marketable securities 43       43
Net loss (15,775)     (15,775)  
Ending balance at Jun. 30, 2018 52,022 $ 28 373,308 (321,308) (6)
Ending balance, shares at Jun. 30, 2018   27,578,989      
Issuance of common stock, net of issuance costs 64,560 $ 9 64,551    
Issuance of common stock, net of issuance costs, shares   9,200,000      
Issuance of common stock upon exercise of stock options and employee stock purchase plan 244   244    
Issuance of common stock upon exercise of stock options and employee stock purchase plan, shares   82,365      
Issuance of restricted stock units, shares   4,463      
Stock-based compensation expense 2,200   2,200    
Unrealized gain (loss) on marketable securities (22)       (22)
Net loss (15,067)     (15,067)  
Ending balance at Sep. 30, 2018 103,937 $ 37 440,303 (336,375) (28)
Ending balance, shares at Sep. 30, 2018   36,865,817      
Beginning balance at Dec. 31, 2018 93,271 $ 37 444,212 (350,945) (33)
Beginning balance, shares at Dec. 31, 2018   37,287,221      
Issuance of common stock upon exercise of stock options and employee stock purchase plan 95   95    
Issuance of common stock upon exercise of stock options and employee stock purchase plan, shares   31,391      
Issuance of restricted stock units, shares   4,467      
Stock-based compensation expense 2,076   2,076    
Unrealized gain (loss) on marketable securities 34       34
Net loss (13,112)     (13,112)  
Ending balance at Mar. 31, 2019 82,364 $ 37 446,383 (364,057) 1
Ending balance, shares at Mar. 31, 2019   37,323,079      
Beginning balance at Dec. 31, 2018 93,271 $ 37 444,212 (350,945) (33)
Beginning balance, shares at Dec. 31, 2018   37,287,221      
Net loss (38,155)        
Ending balance at Sep. 30, 2019 59,880 $ 37 448,902 (389,100) 41
Ending balance, shares at Sep. 30, 2019   37,370,301      
Beginning balance at Mar. 31, 2019 82,364 $ 37 446,383 (364,057) 1
Beginning balance, shares at Mar. 31, 2019   37,323,079      
Issuance of restricted stock units, shares   3,816      
Stock-based compensation expense 1,875   1,875    
Unrealized gain (loss) on marketable securities 29       29
Net loss (12,129)     (12,129)  
Ending balance at Jun. 30, 2019 72,139 $ 37 448,258 (376,186) 30
Ending balance, shares at Jun. 30, 2019   37,326,895      
Issuance of common stock upon exercise of stock options and employee stock purchase plan 40   40    
Issuance of common stock upon exercise of stock options and employee stock purchase plan, shares   39,589      
Issuance of restricted stock units, shares   3,817      
Stock-based compensation expense 604   604    
Unrealized gain (loss) on marketable securities 11       11
Net loss (12,914)     (12,914)  
Ending balance at Sep. 30, 2019 $ 59,880 $ 37 $ 448,902 $ (389,100) $ 41
Ending balance, shares at Sep. 30, 2019   37,370,301