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Nature of Operations and Basis of Presentation - Narrative (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Aug. 06, 2019	Dec. 31, 2018	Jun. 30, 2018	Dec. 31, 2017
Nature of Operations
Cash and Cash Equivalents, at Carrying Value	$ 41,800		$ 22,484
Incremental direct costs, short-term in nature, expensed when incurred	12 months
revenue recognition, payment terms	30 days
Restricted Cash, Noncurrent	$ 1,034			$ 1,012
Allowance for doubtful accounts			1,500
Accumulated depreciation	$ 1,741,300		1,691,658
Percentage Of Expected Natural Gas Requirement Covered Under Contract	35.00%
Shelby paper machine interest cost capitalized	$ 4,900
Entity Common Stock, Shares Outstanding		16,515,156
Account Purchase Agreement [Table Text Block]	ACCOUNT PURCHASE AGREEMENT In June 2018, we entered into an agreement (the “Account Purchase Agreement”) to offer to sell, on a revolving and discounted basis, certain trade accounts receivable balances to an unrelated third-party financial institution. If the financial institution purchases receivables thereunder, in its sole discretion, such transfers are accounted for as sales of receivables resulting in the receivables being de-recognized from our Consolidated Balance Sheet. The Account Purchase Agreement provides for the continuing sale of certain receivables on a revolving basis until June 2020 and automatically renews for successive one year terms, unless either party elects to terminate the Account Purchase Agreement in accordance with its terms. The maximum amount of receivables that may be sold at any time, prior to the settlement thereof, is $30.0 million. For the six months ended June 30, 2019, $87.3 million of receivables were sold under the Account Purchase Agreement. As of June 30, 2019, $9.3 million of accounts receivable sold under the Asset Purchase Agreement were outstanding. The proceeds from these sales of receivables are included within the "Changes in working capital, net" line in the operating activities section of our Consolidated Statements of Cash Flows. For the six months ended June 30, 2019, we recorded factoring expense on sales of receivables of $0.3 million, which is included in the "Interest expense, net" line in the Consolidated Statement of Operations. We have no retained interest in the receivables sold under the Account Purchase Agreement, however, we do have servicing responsibilities for the sold receivables. The fair value of the servicing arrangement was not material to the financial statements.
Factoring Expense	$ 30,000
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	44,274		24,947	$ 54,290	$ 16,738
Accrued account purchase agreement liabilities	16,889		$ 4,885
Consumer Products
Nature of Operations
Severance Costs	$ 1,700