Derivatives and Hedging (Detail) - Outstanding Derivatives Contracts	12 Months Ended
	Dec. 31, 2015 USD ($) outstanding_contract	Dec. 31, 2014 USD ($) outstanding_contract
Derivatives, Fair Value [Line Items]
Number of Outstanding Contracts | outstanding_contract	105	78
Contract Notional Amount	$ 893,610,000	$ 245,650,000
Fair Value Asset (Liability)	(4,897,000)	(2,662,000)
OCI Unrealized (Loss), Net Of Tax	(3,079,000)	$ (1,740,000)
Interest rate swap
Derivatives, Fair Value [Line Items]
Contract Notional Amount	700,000,000.0
Other liabilities | Interest rate swap
Derivatives, Fair Value [Line Items]
Contract Notional Amount	$ 700,000,000
Other liabilities | Interest rate swap | Designated as hedging instrument
Derivatives, Fair Value [Line Items]
Number of Outstanding Contracts | outstanding_contract	3	1
Contract Notional Amount		$ 200,000,000
Fair Value Asset (Liability)	$ (5,132,000)	(2,900,000)
OCI Unrealized (Loss), Net Of Tax	$ (3,079,000)	$ (1,740,000)
Other current assets | Foreign currency forwards
Derivatives, Fair Value [Line Items]
Number of Outstanding Contracts | outstanding_contract	102
Contract Notional Amount	$ 193,610,000
Fair Value Asset (Liability)	235,000
OCI Unrealized (Loss), Net Of Tax	$ 0
Other current assets | Foreign currency forwards
Derivatives, Fair Value [Line Items]
Number of Outstanding Contracts | outstanding_contract		77
Contract Notional Amount		$ 45,650,000
Fair Value Asset (Liability)		238,000
OCI Unrealized (Loss), Net Of Tax		$ 0