Fair Value Measurements - Additional Information (Detail) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 12 Months Ended
Aug. 31, 2013
Dec. 31, 2015
Sep. 30, 2015
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Payments on term loan facility       $ 174,648 $ 249,375 $ 189,796
Fair value of swap agreement reclassified from OCI to interest expense       27,203 30,359 $ 31,220
Recognized interest expense for next twelve months   $ 1,100   1,100    
2014 Term Loan            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Payments on term loan facility   93,600   171,900    
Changes in derivative financial instruments | Amount Reclassified from Accumulated Other Comprehensive Income            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Fair value of swap agreement reclassified from OCI to interest expense   1,200        
Minimum            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Term loan, maturity date Jun. 30, 2014          
LIBOR Interest rate period 1 month          
Maximum            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Term loan, maturity date Aug. 07, 2019          
Designated as Hedging Instrument | Interest rate swaps            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Notional amount of derivatives $ 124,100          
Variable rate interest expense $ 124,100          
Interest rate in addition to LIBOR 1.25%          
Fixed interest rate 2.84%          
Termination of swap agreement recorded in AOCI as fair value     $ 5,700      
Net Investment Hedging            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Notional amount of derivatives   $ 0   $ 0 $ 0