Accumulated Other Comprehensive Income - Schedule of Amounts Reclassified from Accumulated Other Comprehensive Income (Losses) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items]
Costs of products sold	$ (1,403,913)	$ (1,392,335)	$ (1,463,783)
Selling, general and administrative	(134,394)	(190,694)	(127,706)
Income tax provision (benefit)	(31,421)	10,748	(14,001)
Net income	7,914	21,554	64,575
Reclassifications Out of Accumulated Other Comprehensive Income [Member]
Defined Benefit Plan Disclosure [Line Items]
Net income	8,622	14,288	8,310
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Costs and Expenses	15,105	23,175	20,195
Income tax provision (benefit)	(5,725)	(8,783)	(7,654)
Net income	9,380	14,392	12,541
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Pension Benefits [Member] | Prior Service Costs [Member]
Defined Benefit Plan Disclosure [Line Items]
Costs of products sold	2,122	2,026	2,300
Selling, general and administrative	704	672	762
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Pension Benefits [Member] | Actuarial Losses [Member]
Defined Benefit Plan Disclosure [Line Items]
Costs of products sold	9,134	9,798	12,745
Selling, general and administrative	3,145	3,373	4,388
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Pension Benefits [Member] | Settlement Recognition [Member]
Defined Benefit Plan Disclosure [Line Items]
Selling, general and administrative		7,306
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Amortization of Deferred Benefit Other Plan Items [Member]
Defined Benefit Plan Disclosure [Line Items]
Costs and Expenses	(560)	(937)	(49)
Income tax provision (benefit)	212	355	19
Net income	(348)	(582)	(30)
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Amortization of Deferred Benefit Other Plan Items [Member] | Prior Service Costs [Member]
Defined Benefit Plan Disclosure [Line Items]
Costs of products sold	(150)	(150)	(230)
Selling, general and administrative	(32)	(32)	(50)
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Amortization of Deferred Benefit Other Plan Items [Member] | Actuarial Losses [Member]
Defined Benefit Plan Disclosure [Line Items]
Costs of products sold	(311)	(621)	190
Selling, general and administrative	(67)	(134)	41
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	(532)	551	(5,752)
Income tax provision (benefit)	122	(73)	1,551
Net income	$ (410)	$ 478	$ (4,201)