Segment Information Reportable Segments Information (Detail) - USD ($) $ in Thousands		3 Months Ended				6 Months Ended
		Jun. 30, 2017		Jun. 30, 2016		Jun. 30, 2017	Jun. 30, 2016
Segment Reporting Information [Line Items]
Net sales		$ 429,663		$ 436,671		$ 867,188	$ 873,875
Income from operations		19,665		40,165		40,223	77,927
Depreciation and amortization		26,055		22,024		53,612	43,174
Business Acquisition, Transaction Costs		100				200
Consumer Products
Segment Reporting Information [Line Items]
Restructuring and Related Cost, Accelerated Depreciation						200
Net sales		231,912		247,912		474,335	492,930
Income from operations		10,534	[1]	18,544	[1]	16,723	36,934
Depreciation and amortization		16,292	[1]	14,203	[1]	34,534	27,962
Pulp and Paperboard
Segment Reporting Information [Line Items]
Net sales		197,751		188,759		392,853	380,945
Income from operations		21,595	[2]	40,032	[2]	48,843	75,195
Depreciation and amortization		8,356	[2]	6,449	[2]	16,461	12,816
Operating Segments
Segment Reporting Information [Line Items]
Income from operations		32,129		58,576		65,566	112,129
Corporate
Segment Reporting Information [Line Items]
Income from operations	[2]	(12,464)		(18,411)		(25,343)	(34,202)
Depreciation and amortization		$ 1,407	[2]	$ 1,372	[2]	2,617	$ 2,396
Oklahoma City [Domain] | Consumer Products
Segment Reporting Information [Line Items]
Other Nonrecurring Expense, Planned Permaent Facility Closure						6,000
Restructuring and Related Cost, Accelerated Depreciation						3,700
Long Island [Domain] | Consumer Products
Segment Reporting Information [Line Items]
Restructuring and Related Cost, Accelerated Depreciation						$ 300

[1] 1 Operating income for the Consumer Products segment for the three and six months ended June 30, 2017 includes $0.3 million and $6.0 million, respectively, of costs associated with the March 31, 2017 closure of the Oklahoma City facility. Depreciation and amortization expense for the three months ended June 30, 2017 includes accelerated depreciation of $0.3 million associated with the Long Island facility and $0.2 million as a result of the warehouse automation project. In addition to these amounts, depreciation and amortization expense for the six months ended June 30, 2017 also includes $3.7 million of accelerated depreciation associated with the Oklahoma City facility closure.

[2] 2 Corporate expenses for the three and six months ended June 30, 2017 include $0.1 million and $0.2 million of expenses, respectively, associated with the acquisition of Manchester Industries. Operating results subsequent to the acquisition of Manchester Industries are included in the Pulp and Paperboard segment.