Derivative Instruments and Hedging Activities - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2015 AUD	Sep. 30, 2015 EUR (€)	Jul. 31, 2015 USD ($)	Oct. 31, 2013 USD ($)
Derivative [Line Items]
Termination payment			$ 2,300,000
Term A-1 Loans [Member]
Derivative [Line Items]
Debt instrument maturity date	Aug. 02, 2018
Foreign Currency Hedges [Member]
Derivative [Line Items]
Maximum length of time of hedging exposed to variability of future cash flows	12 months
Forward Currency Exchange Contracts [Member] | Derivatives Designated as Hedging Instruments [Member]
Derivative [Line Items]
Derivatives notional amount	AUD 5,300,000	€ 4,300,000
Interest Rate Swaps [Member]
Derivative [Line Items]
Interest rate swap arrangements, amortized notional amount				$ 232,000,000
Interest Rate Swaps [Member] | Term A-1 Loans [Member]
Derivative [Line Items]
Interest payments on the hedged debt				1.34%
Interest Rate Swaps [Member] | Derivatives Designated as Hedging Instruments [Member]
Derivative [Line Items]
Derivatives notional amount				$ 275,000,000