Accumulated Other Comprehensive Income - Schedule of Amounts Reclassified from Accumulated Other Comprehensive Income (Losses) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Costs of products sold	$ (768,629)	$ (780,131)	$ (735,879)
Other, net	4,020	4,477	(383)
Tax expense (benefit)	11,576	(9,242)	7,723
Net income (loss)	21,298	(21,541)	(177,604)
Interest expense	7,022	10,408	15,609
Income (loss)	515	3,670	(177,156)
Pension settlement	(6,154)	(75,326)
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension settlement	2,300	(75,300)
Reclassifications Out of Accumulated Other Comprehensive Income [Member]
Defined Benefit Plan Disclosure [Line Items]
Tax expense (benefit)	(88)	(22,936)	(16,568)
Net income (loss)	(4,658)	49,912	56,963
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Accumulated Net (Gain) Loss from Cash Flow Hedges Attributable to Parent [Member]
Defined Benefit Plan Disclosure [Line Items]
Net income (loss)	(3,972)	(4,683)	3,650
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Net income (loss)	611	55,448	59,428
Income (loss)	699	78,384	75,996
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Pension Benefits [Member] | Prior Service Costs [Member]
Defined Benefit Plan Disclosure [Line Items]
Other, net	48	216	39
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Pension Benefits [Member] | Actuarial Losses [Member]
Defined Benefit Plan Disclosure [Line Items]
Other, net	651	2,842	7,050
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)			6,990
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Pension Benefits [Member] | Pension Curtailment and Settlement [Member]
Defined Benefit Plan Disclosure [Line Items]
Income (loss)			61,917
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Pension Benefits [Member] | Pension Settlement [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension settlement		75,326
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Other Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Other, net	(1,297)	(862)	(8,785)
Tax expense (benefit)		9	2,670
Net income (loss)	(1,297)	(853)	(6,115)
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Other Pension Plan [Member] | Prior Service Costs [Member]
Defined Benefit Plan Disclosure [Line Items]
Other, net	(463)	(10)
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Other Pension Plan [Member] | Discontinued Operations Amortization of Deferred Benefit Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Income (loss)			(575)
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Other Pension Plan [Member] | Other Benefit Plan Settlement [Member]
Defined Benefit Plan Disclosure [Line Items]
Income (loss)			(7,949)
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Other Pension Plan [Member] | Actuarial Gains [Member]
Defined Benefit Plan Disclosure [Line Items]
Other, net	(834)	(852)	(261)
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Interest Rate Swap [Member] | Loss on Interest Rate Swaps [Member]
Defined Benefit Plan Disclosure [Line Items]
Net income (loss)	83
Interest expense	83
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	(5,503)	(6,468)	5,020
Tax expense (benefit)	1,448	1,785	(1,370)
Net income (loss)	$ (4,055)	$ (4,683)	$ 3,650