Schedule of Reclassification Adjustments and Other Activities Impacting Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance		$ (42,355)	$ (39,500)	$ (20,444)
Cumulative effect of accounting change due to ASU 2018-02				(40)
Other comprehensive income (loss) before reclassifications		25,068	(1,334)	(17,852)
Income tax effect of other comprehensive income (loss) before reclassifications		593	(654)	(742)
Amounts reclassified from accumulated other comprehensive loss into net income		2,154	(1,108)	(391)
Income taxes reclassified into net income		(442)	241	(31)
Other comprehensive income (loss), net of tax		27,373	(2,855)	(19,056)
Ending Balance		(14,982)	(42,355)	(39,500)
Defined Benefit Pension Plans
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance		(3,371)	(2,339)	(2,366)
Cumulative effect of accounting change due to ASU 2018-02				(49)
Other comprehensive income (loss) before reclassifications		(328)	(1,264)	18
Income tax effect of other comprehensive income (loss) before reclassifications		117	232	(15)
Amounts reclassified from accumulated other comprehensive loss into net income		131		73
Other comprehensive income (loss), net of tax		(80)	(1,032)	27
Ending Balance		(3,451)	(3,371)	(2,339)
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance		(39,879)	(37,157)	(17,555)
Other comprehensive income (loss) before reclassifications		27,147	(2,329)	(19,212)
Income tax effect of other comprehensive income (loss) before reclassifications		95	(393)	(390)
Other comprehensive income (loss), net of tax		27,242	(2,722)	(19,602)
Ending Balance		(12,637)	(39,879)	(37,157)
Commodity Hedge Derivatives
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance				277
Cumulative effect of accounting change due to ASU 2018-02				9
Amounts reclassified from accumulated other comprehensive loss into net income	[1]			(218)
Income taxes reclassified into net income				(68)
Other comprehensive income (loss), net of tax				(277)
Foreign Currency Hedge Derivatives
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance		895	(4)	(800)
Other comprehensive income (loss) before reclassifications		(1,751)	2,259	1,342
Income tax effect of other comprehensive income (loss) before reclassifications		381	(493)	(337)
Amounts reclassified from accumulated other comprehensive loss into net income	[1]	2,023	(1,108)	(246)
Income taxes reclassified into net income		(442)	241	37
Other comprehensive income (loss), net of tax		211	899	796
Ending Balance		$ 1,106	$ 895	$ (4)

[1] The amounts reclassified from Accumulated other comprehensive income (loss) are included in Cost of sales.  See Note 13 for information related to the effect of commodity and foreign currency derivative instrument`s on our consolidated statements of income.