Derivatives and Hedging Instruments - Summary of Effects of Derivatives on Cash Flow Hedging Relationships in Company's Statements of Income (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Interest Rate Swaps [Member]
Derivative [Line Items]
Gain or (Loss) Recognized in OCI - Effective Portion	$ 645	$ 369
Foreign Currency Exchange Contracts 1 [Member]
Derivative [Line Items]
Gain or (Loss) Recognized in OCI - Effective Portion	(3,031)	(1,224)
Foreign Currency Exchange Contracts 2 [Member]
Derivative [Line Items]
Gain or (Loss) Recognized in OCI - Effective Portion	(658)	(25)
Other (expense) income [Member] | Interest Rate Swaps [Member]
Derivative [Line Items]
Amount of Gain or (Loss) Recognized - Ineffective Portion and Amount Excluded from Effectiveness Testing
Other (expense) income [Member] | Foreign Currency Exchange Contracts 1 [Member]
Derivative [Line Items]
Amount of Gain or (Loss) Recognized - Ineffective Portion and Amount Excluded from Effectiveness Testing
Other (expense) income [Member] | Foreign Currency Exchange Contracts 2 [Member]
Derivative [Line Items]
Amount of Gain or (Loss) Recognized - Ineffective Portion and Amount Excluded from Effectiveness Testing
Interest Expense [Member] | Interest Rate Swaps [Member]
Derivative [Line Items]
Gain or (Loss) Reclassified from OCI into Income - Effective Portion
Salaries and Employee Benefits [Member] | Foreign Currency Exchange Contracts 1 [Member]
Derivative [Line Items]
Gain or (Loss) Reclassified from OCI into Income - Effective Portion	(1,362)	(1,230)
General and Administrative Expenses [Member] | Foreign Currency Exchange Contracts 2 [Member]
Derivative [Line Items]
Gain or (Loss) Reclassified from OCI into Income - Effective Portion	$ (260)	$ (212)