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, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Defined Benefit Plan Disclosure [Line Items]
Costs of products sold	$ (179,983)	$ (172,745)	$ (537,073)	$ (485,783)
Other, net	(2,253)	387	(1,131)	558
Income tax provision (benefit)	3,462	1,680	7,037	4,429
Net income (loss)	(95,831)	12,105	(97,512)	17,994
Income (loss)	(95,126)	7,060	(100,353)	8,907
Reclassifications Out of Accumulated Other Comprehensive Income [Member]
Defined Benefit Plan Disclosure [Line Items]
Net income (loss)	4,881	2,304	13,573	5,594
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Other, net	6,041	3,786	14,515	11,331
Income tax provision (benefit)	(1,988)	(1,362)	(4,037)	(4,075)
Net income (loss)	4,053	2,424	10,478	7,256
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Pension Benefits [Member] | Prior Service Costs [Member]
Defined Benefit Plan Disclosure [Line Items]
Other, net	5	7	16	17
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Pension Benefits [Member] | Actuarial Losses [Member]
Defined Benefit Plan Disclosure [Line Items]
Other, net	2,060	1,777	6,179	5,332
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Pension Benefits [Member] | Discontinued Operations Amortization of Deferred Benefit Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Income (loss)	2,171	2,002	6,515	5,982
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Pension Benefits [Member] | Curtailment Recognition [Member]
Defined Benefit Plan Disclosure [Line Items]
Income (loss)	1,805		1,805
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Other Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Other, net	(217)	(139)	(653)	(419)
Income tax provision (benefit)	56		163
Net income (loss)	(161)	(139)	(490)	(419)
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Other Pension Plan | Discontinued Operations Amortization of Deferred Benefit Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Income (loss)	(201)	(135)	(604)	(409)
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Other Pension Plan | Actuarial Gains [Member]
Defined Benefit Plan Disclosure [Line Items]
Other, net	(16)	(4)	(49)	(10)
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	1,344	29	4,939	(1,687)
Income tax provision (benefit)	(355)	(10)	(1,354)	444
Net income (loss)	$ 989	$ 19	$ 3,585	$ (1,243)