Accumulated Other Comprehensive Income - Schedule of Amounts Reclassified from Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Defined Benefit Plan Disclosure [Line Items]
Costs of products sold	$ (357,887)	$ (365,691)	$ (692,800)	$ (710,732)
Selling, general and administrative	(31,999)	(37,191)	(67,085)	(69,049)
Income tax provision	371	10	(5,663)	(5,058)
Net income (loss)	(5,714)	1,965	5,889	18,133
Reclassifications Out of Accumulated Other Comprehensive Income [Member]
Defined Benefit Plan Disclosure [Line Items]
Net income (loss)	2,014	2,488	3,397	4,559
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Costs and Expenses	4,019	4,208	7,545	7,936
Income tax provision	(1,377)	(1,595)	(2,713)	(3,008)
Net income (loss)	2,642	2,613	4,832	4,928
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	532	509	1,060	1,013
Selling, general and administrative	176	166	352	336
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Pension Benefits [Member] | Actuarial Losses [Member]
Defined Benefit Plan Disclosure [Line Items]
Costs of products sold	2,463	2,618	4,562	4,900
Selling, general and administrative	848	915	1,571	1,687
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Amortization of Deferred Benefit Other Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Costs and Expenses	(92)	(373)	(280)	(469)
Income tax provision	35	141	107	179
Net income (loss)	(57)	(232)	(173)	(290)
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]
Costs of products sold	(38)	(38)	(75)	(75)
Selling, general and administrative	(8)	(8)	(16)	(16)
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Amortization of Deferred Benefit Other Plans [Member] | Actuarial Losses [Member]
Defined Benefit Plan Disclosure [Line Items]
Costs of products sold	(38)	(269)	(156)	(311)
Selling, general and administrative	(8)	(58)	(33)	(67)
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	(785)	215	(1,716)	(83)
Income tax provision	214	(108)	454	4
Net income (loss)	$ (571)	$ 107	$ (1,262)	$ (79)