Debt - Additional Information (Detail) - USD ($)
1 Months Ended 9 Months Ended
Aug. 31, 2016
Jun. 06, 2014
Mar. 31, 2014
Sep. 30, 2016
Dec. 31, 2015
Debt Instrument [Line Items]          
Credit facility obtained       $ 377,900,000  
Total debt       720,639,000 $ 311,889,000
Revolving Credit Facility          
Debt Instrument [Line Items]          
Total debt       $ 167,000,000 $ 0
FOX Credit Facility [Member]          
Debt Instrument [Line Items]          
Fox credit facility interest rate basis       LIBOR plus an applicable margin ranging from 1.50% to 2.50%, or the Prime Rate, plus an applicable margin ranging from 0.50% to 1.50%  
FOX Credit Facility [Member] | Prime Rate [Member] | Minimum [Member]          
Debt Instrument [Line Items]          
Basis spread on variable rate     0.50%    
FOX Credit Facility [Member] | Prime Rate [Member] | Maximum [Member]          
Debt Instrument [Line Items]          
Basis spread on variable rate     1.50%    
Term Loan Facility          
Debt Instrument [Line Items]          
Reduction in LIBOR loans       1.50% to 2.50%  
2014 Credit Agreement [Member]          
Debt Instrument [Line Items]          
Debt issuance cost $ 6,000,000        
2014 Credit Agreement [Member] | Revolving Credit Facility | Minimum [Member]          
Debt Instrument [Line Items]          
Unused fee percentage   0.45%      
2014 Credit Agreement [Member] | Revolving Credit Facility | Maximum [Member]          
Debt Instrument [Line Items]          
Unused fee percentage   0.60%      
2014 Credit Agreement [Member] | Revolving Credit Facility | London Interbank Offered Rate (LIBOR) | Minimum [Member]          
Debt Instrument [Line Items]          
Basis spread on variable rate   2.00%      
2014 Credit Agreement [Member] | Revolving Credit Facility | London Interbank Offered Rate (LIBOR) | Maximum [Member]          
Debt Instrument [Line Items]          
Basis spread on variable rate   2.75%      
2014 Credit Agreement [Member] | Revolving Credit Facility | Federal Funds Rate [Member]          
Debt Instrument [Line Items]          
Basis spread on variable rate   0.50%      
2014 Credit Agreement [Member] | Revolving Credit Facility | Base Rate [Member] | Minimum [Member]          
Debt Instrument [Line Items]          
Basis spread on variable rate   1.00%      
2014 Credit Agreement [Member] | Revolving Credit Facility | Base Rate [Member] | Maximum [Member]          
Debt Instrument [Line Items]          
Basis spread on variable rate   1.75%      
2014 Credit Agreement [Member] | Letter of Credit [Member]          
Debt Instrument [Line Items]          
Credit facility obtained   $ 100,000,000.0      
2014 Credit Agreement [Member] | Swing Line Loans [Member]          
Debt Instrument [Line Items]          
Credit facility obtained   25,000,000.0      
2014 Revolving Credit Facility [Member] | Swing Line Loans [Member] | Revolving Credit Facility          
Debt Instrument [Line Items]          
Credit facility obtained   550,000,000      
2014 Term Loan [Member] | Term Loan [Member]          
Debt Instrument [Line Items]          
Credit facility obtained   $ 325,000,000      
Frequency of payments   quarterly      
Original issue discount 99.25% 99.50%      
Capitalized debt issuance costs $ 6,000,000        
Increase to quarterly payments $ 1,400,000        
2014 Term Loan [Member] | Term Loan [Member] | Minimum [Member]          
Debt Instrument [Line Items]          
Basis spread on variable rate   1.00%      
2014 Term Loan [Member] | Term Loan [Member] | London Interbank Offered Rate (LIBOR)          
Debt Instrument [Line Items]          
Basis spread on variable rate   3.25%      
2014 Term Loan [Member] | Term Loan [Member] | Base Rate [Member]          
Debt Instrument [Line Items]          
Basis spread on variable rate   2.25%      
Letter of Credit [Member]          
Debt Instrument [Line Items]          
Letter of credit outstanding       $ 5,100,000