Schedule of Reclassification Adjustments and Other Activities Impacting Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance		$ (20,444)	$ (69,091)	$ (51,670)
Cumulative effect of accounting change due to adoption of ASU 2018-02		(40)
Other comprehensive income (loss) before reclassifications		(17,852)	50,602	(18,598)
Income tax effect of other comprehensive income (loss) before reclassifications		(742)	(575)	788
Amounts reclassified from accumulated other comprehensive income (loss) into net income		(391)	(1,943)	593
Income taxes reclassified into net income		(31)	563	(204)
Other comprehensive loss, net of tax:		(19,056)	48,647	(17,421)
Ending Balance		(39,500)	(20,444)	(69,091)
Defined Benefit Pension Plans
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance		(2,366)	(2,550)	(2,060)
Cumulative effect of accounting change due to adoption of ASU 2018-02		(49)
Other comprehensive income (loss) before reclassifications		18	166	(723)
Income tax effect of other comprehensive income (loss) before reclassifications		(15)	(60)	185
Amounts reclassified from accumulated other comprehensive income (loss) into net income		73	78	48
Other comprehensive loss, net of tax:		27	184	(490)
Ending Balance		(2,339)	(2,366)	(2,550)
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance		(17,555)	(65,762)	(49,381)
Other comprehensive income (loss) before reclassifications		(19,212)	48,059	(16,678)
Income tax effect of other comprehensive income (loss) before reclassifications		(390)	148	297
Other comprehensive loss, net of tax:		(19,602)	48,207	(16,381)
Ending Balance		(37,157)	(17,555)	(65,762)
Commodity Hedge Derivatives
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance		277	241	(229)
Cumulative effect of accounting change due to adoption of ASU 2018-02		9
Other comprehensive income (loss) before reclassifications			254	154
Income tax effect of other comprehensive income (loss) before reclassifications			(93)	(57)
Amounts reclassified from accumulated other comprehensive income (loss) into net income	[1]	(218)	(199)	589
Income taxes reclassified into net income		(68)	74	(216)
Other comprehensive loss, net of tax:		(277)	36	470
Ending Balance			277	241
Foreign Currency Hedge Derivatives
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance		(800)	(1,020)
Other comprehensive income (loss) before reclassifications		1,342	2,123	(1,351)
Income tax effect of other comprehensive income (loss) before reclassifications		(337)	(570)	363
Amounts reclassified from accumulated other comprehensive income (loss) into net income	[1]	(246)	(1,822)	(44)
Income taxes reclassified into net income		37	489	12
Other comprehensive loss, net of tax:		796	220	(1,020)
Ending Balance		$ (4)	$ (800)	$ (1,020)

[1] The amounts reclassified from accumulated other comprehensive income (loss) are included in cost of sales. See Note 12 for information related to the effect of commodity and foreign currency derivative instrument`s on our consolidated statements of income.