Financial Instruments - Fair Value Hierarchy Level for Company's Liabilities Measured (Detail) - Level 2 [Member] - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Other Current Assets [Member]
Fair Value Of Assets And Liabilities Measured On Recurring Basis [Line Items]
Forward foreign exchange contracts - other current assets	$ 571	$ 370
Interest rate swaps - other assets	33	0
Accrued Liabilities [Member]
Fair Value Of Assets And Liabilities Measured On Recurring Basis [Line Items]
Forward foreign exchange contracts - accrued liabilities	(1,261)	(1,999)
Interest rate swaps - accrued liabilities	(2,318)	(751)
Other Assets [Member]
Fair Value Of Assets And Liabilities Measured On Recurring Basis [Line Items]
Interest rate swaps - other assets	58	19
Other Liabilities [Member]
Fair Value Of Assets And Liabilities Measured On Recurring Basis [Line Items]
Interest rate swaps - accrued liabilities	$ (1,936)	$ (903)