Annual report pursuant to Section 13 and 15(d)

Consolidated Statements of Stockholders' Equity

v3.6.0.2
Consolidated Statements of Stockholders' Equity - USD ($)
$ in Thousands
Total
Common Stock [Member]
Additional Paid-in Capital [Member]
Accumulated Deficit [Member]
Accumulated Other Comprehensive Income/ (Loss) [Member]
Beginning Balances at Dec. 31, 2013 $ 121,710 $ 622 $ 423,209 $ (302,133) $ 12
Beginning Balances, shares at Dec. 31, 2013   62,243,892      
Issuance of common stock in connection with underwritten public offering, net of issuance costs 93,796 $ 44 93,752    
Issuance of common stock in connection with underwritten public offering, net of issuance costs, shares   4,444,444      
Issuance of common stock upon exercise of stock options and in connection with restricted stock units, net of tax 7,533 $ 23 7,510    
Issuance of common stock upon exercise of stock options and in connection with restricted stock units, net of tax, shares   2,266,855      
Issuance of common stock under employee stock purchase plan $ 848 $ 1 847    
Issuance of common stock under employee stock purchase plan, shares 107,203 107,203      
Stock-based compensation $ 9,200   9,200    
Comprehensive loss:          
Net unrealized gain (loss) on marketable securities, net of tax (37)       (37)
Net loss (26,417)     (26,417)  
Comprehensive loss (26,454)        
Ending Balances at Dec. 31, 2014 206,633 $ 690 534,518 (328,550) (25)
Ending Balances, shares at Dec. 31, 2014   69,062,394      
Issuance of common stock upon exercise of stock options and in connection with restricted stock units, net of tax 4,348 $ 12 4,336    
Issuance of common stock upon exercise of stock options and in connection with restricted stock units, net of tax, shares   1,164,033      
Issuance of common stock under employee stock purchase plan $ 911 $ 1 910    
Issuance of common stock under employee stock purchase plan, shares 128,181 128,181      
Stock-based compensation $ 11,730   11,730    
Claims settlement under Section 16(b), net of tax benefit 9,495   9,495    
Comprehensive loss:          
Net unrealized gain (loss) on marketable securities, net of tax 25       25
Net loss (40,703)     (40,703)  
Comprehensive loss (40,678)        
Ending Balances at Dec. 31, 2015 $ 192,439 $ 703 560,989 (369,253)  
Ending Balances, shares at Dec. 31, 2015 70,354,608 70,354,608      
Issuance of common stock upon exercise of stock options and in connection with restricted stock units, net of tax $ (481) $ 3 (484)    
Issuance of common stock upon exercise of stock options and in connection with restricted stock units, net of tax, shares   314,583      
Issuance of common stock under employee stock purchase plan $ 818 $ 3 815    
Issuance of common stock under employee stock purchase plan, shares 202,711 202,711      
Stock-based compensation $ 15,057   15,057    
Comprehensive loss:          
Net unrealized gain (loss) on marketable securities, net of tax 20       20
Net loss (71,658)     (71,658)  
Comprehensive loss (71,638)        
Ending Balances at Dec. 31, 2016 $ 136,195 $ 709 $ 576,377 $ (440,911) $ 20
Ending Balances, shares at Dec. 31, 2016 70,871,902 70,871,902