Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Statements of Stockholders' Equity

v3.19.1
Condensed Consolidated Statements of Stockholders' Equity - USD ($)
$ in Thousands
Total
Common Stock [Member]
Additional Paid-in Capital [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Deficit [Member]
Balance at beginning of period at Dec. 31, 2017 $ 84,947 $ 4 $ 535,503 $ (44) $ (450,516)
Balance at beginning of period (in shares) at Dec. 31, 2017   44,408,796      
Issuance of common stock upon exercise of stock options and incentive awards 3,276   3,276    
Issuance of common stock upon exercise of stock options and incentive awards (Shares)   667,656      
Issuance of common stock upon exercise of warrants, value 3,753   3,753    
Issuance of common stock upon exercise of warrants (Shares)   297,144      
Stock-based compensation expense 1,796   1,796    
Issuance of common stock, value 135,520 $ 2 135,518    
Issuance of common stock, (in shares)   13,340,000      
Net loss (17,005)       (17,005)
Net unrealized gain (loss) on marketable securities (88)     (88)  
Balance at end of period at Mar. 31, 2018 212,199 $ 6 679,846 (132) (467,521)
Balance at end of period (in shares) at Mar. 31, 2018   58,713,596      
Balance at beginning of period at Dec. 31, 2018 170,418 $ 6 693,534 (58) (523,064)
Balance at beginning of period (in shares) at Dec. 31, 2018   59,456,493      
Issuance of common stock upon exercise of stock options and incentive awards 97   97    
Issuance of common stock upon exercise of stock options and incentive awards (Shares)   37,550      
Stock-based compensation expense 2,342   2,342    
Issuance of common stock, value 107,746 $ 1 107,745    
Issuance of common stock, (in shares)   9,200,000      
Net loss (23,075)       (23,075)
Net unrealized gain (loss) on marketable securities 103     103  
Balance at end of period at Mar. 31, 2019 $ 257,631 $ 7 $ 803,718 $ 45 $ (546,139)
Balance at end of period (in shares) at Mar. 31, 2019   68,694,043