Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Summary of Vested and Nonvested RSU and RSA Activity Under 2013 Plan (Parenthetical) (Detail)

v2.4.0.8
Stock-Based Compensation - Summary of Vested and Nonvested RSU and RSA Activity Under 2013 Plan (Parenthetical) (Detail)
9 Months Ended
Sep. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Unrecognized stock-based compensation expenses recognition period 4 years 2 months 5 days