Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation Plans - Subsequent to the IPO - 2013 Omnibus Equity Incentive Plan - Additional Information (Detail)

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Stock-Based Compensation Plans - Subsequent to the IPO - 2013 Omnibus Equity Incentive Plan - Additional Information (Detail)
3 Months Ended 0 Months Ended 3 Months Ended
Mar. 31, 2014
Mar. 31, 2014
2013 Omnibus Equity Incentive Plan [Member]
Incentive_Plan
Dec. 31, 2013
2013 Omnibus Equity Incentive Plan [Member]
Feb. 28, 2014
2013 Omnibus Equity Incentive Plan [Member]
Restricted Stock Units (RSUs) [Member]
Mar. 31, 2014
2013 Omnibus Equity Incentive Plan [Member]
Restricted Stock Units and Awards [Member]
Non-employee directors [Member]
Mar. 31, 2014
2013 Omnibus Equity Incentive Plan [Member]
Deferred stock units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of active equity plans   1        
Common stock shares reserved for issuance of awards     5,500,000      
Common stock shares available for future grants   2,272,250        
Common stock available for future issuance authorized annual share increase   1,100,000        
Common stock available for future issuance authorized annual percentage increase   3.00%        
Restricted stock units granted during the period 38,088     38,088    
Share-based payment award vesting rights, percentage       20.00%    
Restricted stock units granted during the period first vesting date       Feb. 11, 2015    
Period for nonvested restricted stock units         4 years 7 months 10 days  
Unrecognized stock-based compensation expenses recognition period         4 years 7 months 10 days  
Fully vested deferred stock units 2,276,000         2,275,747