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Discontinued Operations - Summary of Discontinued Operations included in Consolidated Statements of Income (Loss) (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Non-operating income (expense)      
Income (loss) before income taxes $ 216 $ 544 $ 1,284
Income tax provision (benefit) 0 29 (2,386)
Income from discontinued operations 216 515 3,670
Specialty Papers      
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]      
Total revenues 0 0 0
Costs of products sold 0 0 0
Gross profit 0 0 0
Selling, general and administrative expenses (216) (544) 109
(Gains) losses on dispositions of plant, equipment and timberlands, net 0 0 0
Operating income (loss) 216 544 (109)
Non-operating income (expense)      
Interest expense 0 0 0
Other, net 0 0 1,393
Impairment charge 0 0 0
Income (loss) before income taxes 216 544 1,284
Income tax provision (benefit) 0 29 (2,386)
Income from discontinued operations 216 515 3,670
Specialty Papers | Net sales      
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]      
Total revenues 0 0 0
Specialty Papers | Energy and related sales, net      
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]      
Total revenues $ 0 $ 0 $ 0