v3.6.0.2
Consolidated Statements of Convertible Preferred Stock and Stockholders' Equity (Deficit) - USD ($)
shares in Thousands, $ in Thousands
Common stock
Additional Paid-in Capital
Notes Receivable from Officers
Accumulated Other Comprehensive Loss
Accumulated Deficit
Total
Balance at Dec. 31, 2013 $ 1 $ 3,338 $ (192)   $ (174,656) $ (171,509)
Balance (in shares) at Dec. 31, 2013 6,561          
Issuance of common stock upon exercise of stock options   169       169
Issuance of common stock upon exercise of stock options (in shares) 318          
Stock based compensation   5,157       5,157
Net loss         (5,152) (5,152)
Balance at Dec. 31, 2014 $ 1 8,664 (192)   (179,808) (171,335)
Balance (in shares) at Dec. 31, 2014 6,879          
Issuance of common stock upon exercise of stock options   1,258       1,258
Issuance of common stock upon exercise of stock options (in shares) 1,170          
Stock based compensation   7,326       7,326
Officer loan receivable repayment     $ 192     192
Issuance of common stock in connection with the initial public offering $ 1 182,465       182,466
Issuance of common stock in connection with the initial public offering (in shares) 10,900          
Issuance costs of Initial Public Offering   (4,036)       (4,036)
Conversion of all Preferred Stock into Common Stock upon the completion of the initial public offering $ 3 240,582       240,585
Conversion of all Preferred Stock into Common Stock upon the completion of the initial public offering (in shares) 31,397          
Unrealized gain (loss) on available-for-sale investments       $ (1,416)   (1,416)
Net loss         (70,275) (70,275)
Balance at Dec. 31, 2015 $ 5 436,259   (1,416) (250,083) $ 184,765
Balance (in shares) at Dec. 31, 2015 50,346         50,346
Issuance of common stock upon exercise of stock options   3,595       $ 3,595
Issuance of common stock upon exercise of stock options (in shares) 1,913          
Issuance of common stock under employee stock purchase plan   2,589       2,589
Issuance of common stock under employee stock purchase plan (in shares) 341          
Vesting of restricted stock (in shares) 65          
Stock based compensation   10,601       10,601
Unrealized gain (loss) on available-for-sale investments       691   691
Net loss         (95,765) (95,765)
Balance at Dec. 31, 2016 $ 5 $ 453,044   $ (725) $ (345,848) $ 106,476
Balance (in shares) at Dec. 31, 2016 52,665         52,665