Schedule of Reclassification Adjustments and Other Activities Impacting Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	3 Months Ended				9 Months Ended
	Sep. 30, 2018		Sep. 30, 2017		Sep. 30, 2018		Sep. 30, 2017
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	$ (31,843)		$ (37,608)		$ (20,444)		$ (69,091)
Cumulative effect of accounting change due to adoption of ASU 2018-02					(40)
Other comprehensive income (loss) before reclassifications	(1,680)		13,510		(12,471)		45,353
Income tax effect of other comprehensive income (loss) before reclassifications	(476)		(134)		(832)		(1,067)
Amounts reclassified from accumulated other comprehensive (income) loss into net income	167		(1,357)		38		(577)
Income taxes reclassified into net income	(45)		366		(128)		159
Other comprehensive (loss) income, net of tax	(2,034)		12,385		(13,433)		43,868
Ending Balance	(33,877)		(25,223)		(33,877)		(25,223)
Defined Benefit Pension Plans
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(2,406)		(2,550)		(2,366)		(2,550)
Cumulative effect of accounting change due to adoption of ASU 2018-02					(40)
Other comprehensive (loss) income, net of tax					(40)
Ending Balance	(2,406)		(2,550)		(2,406)		(2,550)
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(29,040)		(37,071)		(17,555)		(65,762)
Other comprehensive income (loss) before reclassifications	(3,266)		13,251		(14,519)		42,051
Income tax effect of other comprehensive income (loss) before reclassifications	15		(49)		(217)		(158)
Other comprehensive (loss) income, net of tax	(3,251)		13,202		(14,736)		41,893
Ending Balance	(32,291)		(23,869)		(32,291)		(23,869)
Commodity Hedge Derivatives
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance			272		277		241
Other comprehensive income (loss) before reclassifications			153				231
Income tax effect of other comprehensive income (loss) before reclassifications			(56)				(84)
Amounts reclassified from accumulated other comprehensive (income) loss into net income			(17)	[1]	(218)	[1]	(47)
Income taxes reclassified into net income			6		(59)		17
Other comprehensive (loss) income, net of tax			86		(277)		117
Ending Balance			358				358
Foreign Currency Hedge Derivatives
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(397)		1,741		(800)		(1,020)
Other comprehensive income (loss) before reclassifications	1,586		106		2,048		3,071
Income tax effect of other comprehensive income (loss) before reclassifications	(491)		(29)		(615)		(825)
Amounts reclassified from accumulated other comprehensive (income) loss into net income	167	[1]	(1,340)	[1]	256	[1]	(530)
Income taxes reclassified into net income	(45)		360		(69)		142
Other comprehensive (loss) income, net of tax	1,217		(903)		1,620		1,858
Ending Balance	$ 820		$ 838		$ 820		$ 838

[1] The amounts reclassified from accumulated other comprehensive income (loss) are included in cost of sales.