Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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Name:	us-gaap_Goodwill
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Goodwill and Other Intangible Assets - Narrative (Detail) - USD ($) $ in Thousands	Sep. 30, 2021	May 13, 2021	Dec. 31, 2020
Goodwill [Line Items]
Goodwill	$ 191,619		$ 164,369
Georgia-Pacific Mt. Holly LLC, Georgia-Pacific's U.S. Nonwovens Business ("Mount Holly")
Goodwill [Line Items]
Goodwill		$ 36,231
Customer Relationships \| Georgia-Pacific Mt. Holly LLC, Georgia-Pacific's U.S. Nonwovens Business ("Mount Holly")
Goodwill [Line Items]
Identifiable intangibles assets		$ 20,000