Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Summary of Stock Options Activity (Details)

v3.4.0.3
Stockholders' Equity - Summary of Stock Options Activity (Details) - $ / shares
 3 Months Ended 12 Months Ended
Mar. 31, 2016
Dec. 31, 2015
Class Of Stock [Line Items]    
Stock Options Outstanding, Beginning balance 2,295,370  
Stock Options, Exercised (77,359)  
Stock Options, Forfeited (21,375)  
Stock Options Outstanding, Ending balance 2,196,636 2,295,370
Stock Options, Vested and exercisable 967,017  
Stock Options, Vested and expected to vest 2,094,190  
Outstanding, Weighted average exercise price, Beginning balance $ 19.36  
Weighted average exercise price, Exercised 1.19  
Weighted average exercise price, Forfeited 24.01  
Outstanding, Weighted average exercise price, Ending balance 19.95 $ 19.36
Weighted average exercise price, Vested and exercisable 8.57  
Weighted average exercise price, Vested and expected to vest $ 19.72  
Remaining weighted average contractual term, Outstanding 5 years 9 months 7 days 5 years 11 months 23 days
Remaining weighted average contractual term, Vested and exercisable 5 years 5 months 5 days  
Remaining weighted average contractual term, Vested and expected to vest 5 years 9 months  
Outstanding, Per share average intrinsic value $ 25.08 $ 21.07
Per share average intrinsic value, Vested and exercisable 36.41  
Per share average intrinsic value, Vested and expected to vest 25.30  
Minimum    
Class Of Stock [Line Items]    
Outstanding, Price per share, Beginning balance 0.60  
Price per share, Exercised 0.60  
Price per share, Forfeited 16.62  
Outstanding, Price per share, Ending balance 0.60 0.60
Price per share, Vested and exercisable 0.60  
Price per share, Vested and expected to vest 0.60  
Maximum    
Class Of Stock [Line Items]    
Outstanding, Price per share, Beginning balance 46.66  
Price per share, Exercised 18.93  
Price per share, Forfeited 24.52  
Outstanding, Price per share, Ending balance 46.66 $ 46.66
Price per share, Vested and exercisable 46.66  
Price per share, Vested and expected to vest $ 46.66