XML 20 R6.htm IDEA: XBRL DOCUMENT v3.6.0.2
Consolidated Statements of Stockholders' Equity - USD ($)
$ in Thousands
Total
Common stock
Additional paid-in capital
Accumulated other comprehensive income (loss)
Accumulated deficit
Balance at Dec. 31, 2013 $ 136,542 $ 24 $ 465,246 $ 70 $ (328,798)
Balance (in shares) at Dec. 31, 2013   23,803,282      
Increase (Decrease) in Stockholders' Equity          
Issuance of common stock from public offerings and exercise of over allotment exercise, net of offering costs 235,980 $ 9 235,971    
Issuance of common stock from public offerings and exercise of over allotment exercise, net of offering costs (in shares)   8,613,265      
Exercise of options 1,195 $ 0 1,195    
Exercise of stock options (in shares)   108,645      
Restricted stock vesting 0        
Restricted stock vesting (in shares)   373,200      
Share-based compensation expense 19,310   19,310    
Net loss (93,753)       (93,753)
Comprehensive loss (807)     (807)  
Balance at Dec. 31, 2014 298,467 $ 33 721,722 (737) (422,551)
Balance (in shares) at Dec. 31, 2014   32,898,392      
Increase (Decrease) in Stockholders' Equity          
Equity component of the convertible notes issuance, net 55,754   55,754    
Exercise of options 8,711 $ 1 8,710    
Exercise of stock options (in shares)   656,248      
Restricted stock vesting 0        
Restricted stock vesting (in shares)   361,919      
Share-based compensation expense 33,979   33,979    
Net loss (170,447)       (170,447)
Comprehensive loss (463)     (463)  
Balance at Dec. 31, 2015 226,001 $ 34 820,165 (1,200) (592,998)
Balance (in shares) at Dec. 31, 2015   33,916,559      
Increase (Decrease) in Stockholders' Equity          
Exercise of options 968 $ 0 968    
Exercise of stock options (in shares)   89,216      
Restricted stock vesting 0        
Restricted stock vesting (in shares)   163,635      
Share-based compensation expense 35,009   35,009    
Net loss (142,110)       (142,110)
Comprehensive loss (285)     (285)  
Balance at Dec. 31, 2016 $ 119,583 $ 34 $ 856,142 $ (1,485) $ (735,108)
Balance (in shares) at Dec. 31, 2016   34,169,410