Quarterly report pursuant to Section 13 or 15(d)

Stock Plans and Stock-Based Compensation - Additional Information (Detail)

v3.3.0.814
Stock Plans and Stock-Based Compensation - Additional Information (Detail) - 2013 Equity Incentive Plan [Member] - shares
Jan. 01, 2015
Sep. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Increased in shares available for issuance 734,805  
Share based compensation arrangement number of issued options   1,754,350