Fair Value of Financial Instruments - Fair Value Hierarchy Level for Company's Liabilities Measured (Detail) - Level 2 [Member] - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Other Current Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency contracts, asset, fair value disclosure	$ 761	$ 764
Accrued Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency contracts, liability, fair value disclosure	(2,363)	(535)
Interest rate cash flow hedge liability at fair value	(515)	(2,458)
Other Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate cash flow hedge liability at fair value	$ 0	$ (661)