XML 41 R30.htm IDEA: XBRL DOCUMENT v3.8.0.1
Credit Arrangements and Debt Obligations - Additional Information (Detail) - USD ($)
3 Months Ended 4 Months Ended 5 Months Ended 9 Months Ended
Oct. 16, 2017
May 08, 2017
Sep. 30, 2017
Sep. 30, 2016
May 07, 2017
Sep. 30, 2017
Sep. 30, 2017
Sep. 30, 2016
Dec. 31, 2016
Debt Instrument [Line Items]                  
Repayments of debt             $ 922,500,000    
Proceeds of debt used for business combination             150,000,000    
Borrowings on revolving credit facility     $ 65,500,000     $ 65,500,000 65,500,000   $ 76,000,000
Amortization of deferred financing costs     300,000 $ 600,000     1,000,000 $ 1,800,000  
Amortization expense of original issuance discount costs     100,000 $ 400,000     300,000 $ 1,100,000  
Senior Notes [Member]                  
Debt Instrument [Line Items]                  
Debt instrument, principal amount     $ 1,300,000,000     $ 1,300,000,000 $ 1,300,000,000    
Secured Debt [Member] | Revolving Credit Facility [Member]                  
Debt Instrument [Line Items]                  
Effective interest rate for the term loans     3.50%     3.50% 3.50%   5.50%
Secured Debt [Member] | Senior Credit Facilities [Member]                  
Debt Instrument [Line Items]                  
Debt instrument, principal amount     $ 1,075,000,000     $ 1,075,000,000 $ 1,075,000,000    
Maturity date             Nov. 07, 2023    
Quarterly principal payments             $ 2,700,000    
Debt instrument, term             7 years    
Effective interest rate for the term loans     3.50%     3.50% 3.50%   3.50%
Weighted average interest rate     3.50% 4.00%   3.50% 3.50% 4.00%  
Secured Debt [Member] | Amended Senior Credit Facility [Member]                  
Debt Instrument [Line Items]                  
Maturity date             Nov. 07, 2023    
Revolving Credit Facility [Member]                  
Debt Instrument [Line Items]                  
Weighted average interest rate     4.20% 4.40%   4.20% 4.20% 4.40%  
Revolving Credit Facility [Member] | Senior Credit Facilities [Member]                  
Debt Instrument [Line Items]                  
Debt instrument, principal amount     $ 100,000,000.0     $ 100,000,000.0 $ 100,000,000.0    
Base Rate [Member] | Term Loan Facility [Member]                  
Debt Instrument [Line Items]                  
Debt instrument floor rate         1.75%        
Base Rate [Member] | Amended Senior Credit Facility [Member]                  
Debt Instrument [Line Items]                  
Basis spread on variable rate   1.25%              
Base Rate [Member] | Minimum [Member] | Term Loan Facility [Member]                  
Debt Instrument [Line Items]                  
Basis spread on variable rate         1.50%        
Base Rate [Member] | Minimum [Member] | Revolving Credit Facility [Member] | Senior Credit Facilities [Member]                  
Debt Instrument [Line Items]                  
Basis spread on variable rate         1.25% 0.75%      
Base Rate [Member] | Maximum [Member] | Term Loan Facility [Member]                  
Debt Instrument [Line Items]                  
Basis spread on variable rate         1.75%        
Base Rate [Member] | Maximum [Member] | Revolving Credit Facility [Member] | Senior Credit Facilities [Member]                  
Debt Instrument [Line Items]                  
Basis spread on variable rate         1.75% 1.25%      
Eurodollar [Member] | Term Loan Facility [Member]                  
Debt Instrument [Line Items]                  
Debt instrument floor rate         0.75%        
Eurodollar [Member] | Amended Senior Credit Facility [Member]                  
Debt Instrument [Line Items]                  
Basis spread on variable rate   2.25%              
Eurodollar [Member] | Minimum [Member] | Revolving Credit Facility [Member] | Senior Credit Facilities [Member]                  
Debt Instrument [Line Items]                  
Basis spread on variable rate         2.25% 1.75%      
Eurodollar [Member] | Minimum [Member] | Term Loan Facility [Member] | Senior Credit Facilities [Member]                  
Debt Instrument [Line Items]                  
Basis spread on variable rate         2.50%        
Eurodollar [Member] | Maximum [Member] | Term Loan Facility [Member]                  
Debt Instrument [Line Items]                  
Basis spread on variable rate         2.75%        
Eurodollar [Member] | Maximum [Member] | Revolving Credit Facility [Member] | Senior Credit Facilities [Member]                  
Debt Instrument [Line Items]                  
Basis spread on variable rate         2.75% 2.25%      
Subsequent Event [Member] | Interest Rate Swap [Member]                  
Debt Instrument [Line Items]                  
Subsequent Event, Description 500                
Subsequent Event [Member] | Base Rate [Member] | Interest Rate Swap [Member]                  
Debt Instrument [Line Items]                  
Subsequent Event, Description 0.019                
Subsequent Event [Member] | Interest Rate Floor [Member] | Interest Rate Swap [Member]                  
Debt Instrument [Line Items]                  
Subsequent Event, Description 0.0075                
Amendment January 2016 | Revolving Credit Facility [Member] | Senior Credit Facilities [Member]                  
Debt Instrument [Line Items]                  
Debt instrument, principal amount     $ 225,000,000.0     $ 225,000,000.0 $ 225,000,000.0