Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Additional Information (Details)

v2.4.0.8
Stock-Based Compensation - Additional Information (Details) (USD $)
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Number of stock options granted during the period 170,392  
Unrecognized Stock-Based Compensation $ 11,428,000  
Stock-based compensation expense 1,404,000 46,000
Employee Stock Option
   
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Number of stock options granted during the period   0
Unrecognized Stock-Based Compensation 551,000  
RSUs
   
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Fair value of shares vested 216,000  
Restricted stock units granted during period 1,730,714  
Unrecognized Stock-Based Compensation 10,877,000  
Number of stock options exchanged for RSUs 93,968  
Incremental fair value 758,000  
Stock Options to Non-employees
   
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Number of stock options granted during the period 145,387  
Stock-based compensation expense $ 714,000  
Stock Options to Non-employees | Restricted Shares
   
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Restricted stock units granted during period 50,000  
2012 Plan
   
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Shares issuable with respect to awards granted 3,000,000  
Shares available for grant 867,323