Components of Accumulated Other Comprehensive Loss, Net (Parenthetical) (Detail) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Accumulated Deferred Gains (Losses) on Cash Flow Hedges:
Accumulated Other Comprehensive Income (Loss) [Line Items]
Derivative fair value adjustment, tax		$ 0	$ 9
Accumulated Effect of Retirement Benefit Obligations:
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amortization of actuarial losses, taxes	[1]	$ 12	$ 10

[1] Amounts are recorded in selling, general and administrative expense on the condensed consolidated statements of operations.