The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 159

-Paragraph 18

-Subparagraph f

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 18

-Paragraph 20

-Subparagraph a (1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Name:	us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Guarantor Financial Statements (Details Textual)	Sep. 30, 2012	Dec. 31, 2011
Guarantor financial statements (Textual) [Abstract]
Percentage of Senior Notes due 2020	7.125%	7.125%
PHG Tea Leaves, Inc. [Member]
Guarantor financial statements (Textual) [Abstract]
Percentage owned in domestic subsidiaries	100.00%
Mollanvick, Inc. [Member]
Guarantor financial statements (Textual) [Abstract]
Percentage owned in domestic subsidiaries	100.00%
The Glatfelter Pulp Wood Company [Member]
Guarantor financial statements (Textual) [Abstract]
Percentage owned in domestic subsidiaries	100.00%
Glatfelter Holdings, LLC [Member]
Guarantor financial statements (Textual) [Abstract]
Percentage owned in domestic subsidiaries	100.00%