Quarterly report pursuant to Section 13 or 15(d)

Subsequent Event - Additional Information (Detail)

v3.2.0.727
Subsequent Event - Additional Information (Detail) - 2012 Equity Incentive Plan - $ / shares
6 Months Ended
Aug. 06, 2015
Jun. 30, 2015
Subsequent Event [Line Items]    
Restricted stock units granted description   Twenty-five percent of all these RSUs granted vest and settle on each of the first, second, third and fourth anniversaries of the grant date.
Subsequent Event    
Subsequent Event [Line Items]    
Restricted stock units granted 966,510  
Fair value granted restricted stock unit per share $ 13.23  
Subsequent Event | First Anniversary    
Subsequent Event [Line Items]    
Restricted stock, vesting percentage 25.00%  
Subsequent Event | Second Anniversary    
Subsequent Event [Line Items]    
Restricted stock, vesting percentage 25.00%  
Subsequent Event | Third Anniversary    
Subsequent Event [Line Items]    
Restricted stock, vesting percentage 25.00%  
Subsequent Event | Fourth Anniversary    
Subsequent Event [Line Items]    
Restricted stock, vesting percentage 25.00%