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		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Defined Benefit Plan Disclosure [Line Items]
Costs of products sold	$ (385,114)	$ (358,588)	$ (748,283)	$ (694,801)
Other, net	257	(98)	28	(910)
Income tax provision (benefit)	8,025	371	5,256	(5,663)
Net income (loss)	(7,399)	(5,714)	(1,683)	5,889
Reclassifications Out of Accumulated Other Comprehensive Income [Member]
Defined Benefit Plan Disclosure [Line Items]
Net income (loss)	4,202	2,014	8,692	3,397
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Income tax provision (benefit)	(1,043)	(1,377)	(2,049)	(2,713)
Net income (loss)	3,261	2,642	6,425	4,832
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Pension Benefits [Member] | Prior Service Costs [Member]
Defined Benefit Plan Disclosure [Line Items]
Other, net	781	708	1,561	1,412
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Pension Benefits [Member] | Actuarial Losses [Member]
Defined Benefit Plan Disclosure [Line Items]
Other, net	3,523	3,311	6,913	6,133
Costs and Expenses	4,304	4,019	8,474	7,545
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Amortization of Deferred Benefit Other Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Income tax provision (benefit)	78	35	107	107
Net income (loss)	(240)	(57)	(329)	(173)
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Amortization of Deferred Benefit Other Plans [Member] | Prior Service Costs [Member]
Defined Benefit Plan Disclosure [Line Items]
Other, net	(46)	(46)	(91)	(91)
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Amortization of Deferred Benefit Other Plans [Member] | Actuarial Losses [Member]
Defined Benefit Plan Disclosure [Line Items]
Other, net	(272)	(46)	(345)	(189)
Costs and Expenses	(318)	(92)	(436)	(280)
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Cash Flow Hedges [Member] | Accumulated Net (Gain) Loss from Cash Flow Hedges Attributable to Parent
Defined Benefit Plan Disclosure [Line Items]
Costs of products sold	1,636	(785)	3,595	(1,716)
Income tax provision (benefit)	(455)	214	(999)	454
Net income (loss)	$ 1,181	$ (571)	$ 2,596	$ (1,262)