XML 57 R46.htm IDEA: XBRL DOCUMENT v3.5.0.2
Net Loss per Share Attributable to Common Stockholders - Summary of Common Stock Equivalents Excluded from Computation of Diluted Net Income (Loss) Per Share (Detail) - shares
9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Stock options    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Common stock equivalents excluded from computation of diluted net income (loss) per share (in shares) 2,843,580 2,374,055
Common stock warrants    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Common stock equivalents excluded from computation of diluted net income (loss) per share (in shares) 61,595 198,662
Unvested restricted stock awards    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Common stock equivalents excluded from computation of diluted net income (loss) per share (in shares) 327,899 308,193
Shares expected to be purchased on December 31 under the 2014 ESPP    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Common stock equivalents excluded from computation of diluted net income (loss) per share (in shares) 11,643 7,945