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Subsequent Event - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
9 Months Ended 0 Months Ended 0 Months Ended
Sep. 30, 2014
Sep. 30, 2014
Swing Line Loans [Member]
Sep. 30, 2014
Term Loan A [Member]
Sep. 30, 2014
Term Loan B [Member]
Oct. 24, 2014
Subsequent Event [Member]
Oct. 24, 2014
Subsequent Event [Member]
Federal Fund Rate Plus [Member]
Oct. 24, 2014
Subsequent Event [Member]
Eurocurrency Rate Plus [ Member]
Oct. 24, 2014
Subsequent Event [Member]
Eurocurrency Rate Loans [Member]
Oct. 24, 2014
Subsequent Event [Member]
Base Rate Loans [Member]
Oct. 24, 2014
Subsequent Event [Member]
Maximum [Member]
Oct. 24, 2014
Subsequent Event [Member]
Maximum [Member]
LIBOR Rate Member [Member]
Oct. 24, 2014
Subsequent Event [Member]
Maximum [Member]
Eurocurrency Rate Plus [ Member]
Oct. 24, 2014
Subsequent Event [Member]
Maximum [Member]
Revolving Credit Facility A Member
Oct. 24, 2014
Subsequent Event [Member]
Maximum [Member]
Revolving Credit Facility B Member
Oct. 24, 2014
Subsequent Event [Member]
Maximum [Member]
Term Loan A [Member]
Oct. 24, 2014
Subsequent Event [Member]
Maximum [Member]
Term Loan B [Member]
Oct. 24, 2014
Subsequent Event [Member]
Minimum [Member]
Oct. 24, 2014
Subsequent Event [Member]
Minimum [Member]
LIBOR Rate Member [Member]
Oct. 24, 2014
Subsequent Event [Member]
Minimum [Member]
Eurocurrency Rate Plus [ Member]
Subsequent Event [Line Items]                                      
Revolving credit facility         $ 3,355,000               $ 1,000,000 $ 35,000          
Line of credit facility, increase additional borrowings $ 52,059                 $ 430,000         $ 2,020,000 $ 300,000      
Principal payment due   10 days 5 years 7 years                              
Percentage of voting shares pledged         66.00%                            
Interest on line of credit           0.50% 1.00% 3.00% 2.00% 0.20% 2.00% 1.00%         0.20% 1.00% 0.00%