Accumulated Other Comprehensive Income - Schedule of Amounts Reclassified from Accumulated Other Comprehensive Income and Into the Condensed Consolidated Statements of Income (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Defined Benefit Plan Disclosure [Line Items]
Costs of products sold	$ (195,222)	$ (194,494)	$ (574,100)	$ (585,563)
Income tax provision	3,614	3,141	8,775	10,654
Net income	6,527	12,224	11,517	23,341
Other, net	1,728	1,034	3,243	3,547
Reclassifications Out of Accumulated Other Comprehensive Income [Member]
Defined Benefit Plan Disclosure [Line Items]
Net income	(1,080)	(863)	(3,948)	(2,436)
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Income tax provision	(23)	(291)	(70)	(1,763)
Net income	153	592	450	772
Other, net	176	883	520	2,535
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Pension Benefits [Member] | Prior Service Costs [Member]
Defined Benefit Plan Disclosure [Line Items]
Other, net	12	64	35	152
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Pension Benefits [Member] | Actuarial Losses [Member]
Defined Benefit Plan Disclosure [Line Items]
Other, net	164	819	485	2,383
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Other Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Income tax provision	76	71	228	156
Net income	(248)	(224)	(745)	(490)
Other, net	(324)	(295)	(973)	(646)
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Other Pension Plan [Member] | Prior Service Costs [Member]
Defined Benefit Plan Disclosure [Line Items]
Other, net	(115)	(2)	(347)	(7)
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Other Pension Plan [Member] | Actuarial Gains [Member]
Defined Benefit Plan Disclosure [Line Items]
Other, net	(209)	(293)	(626)	(639)
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Cash Flow Hedges [Member] | Accumulated Net (Gain) Loss from Cash Flow Hedges Attributable to Parent [Member]
Defined Benefit Plan Disclosure [Line Items]
Costs of products sold	(1,345)	(1,738)	(5,015)	(3,783)
Income tax provision	360	507	1,362	1,065
Net income	$ (985)	$ (1,231)	$ (3,653)	$ (2,718)