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Condensed Consolidating Financial Statements - Additional Information (Detail)	Jun. 30, 2016	Oct. 03, 2012
PHG Tea Leaves, Inc. [Member]
Schedule of Equity Method Investments [Line Items]
Percentage owned in domestic subsidiaries	100.00%
Mollanvick, Inc. [Member]
Schedule of Equity Method Investments [Line Items]
Percentage owned in domestic subsidiaries	100.00%
Glatfelter Holdings, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Percentage owned in domestic subsidiaries	100.00%
Glatfelter Composite Fibers N. A., Inc. [Member]
Schedule of Equity Method Investments [Line Items]
Percentage owned in domestic subsidiaries	100.00%
Glatfelter Advanced Materials N.A., Inc. [Member]
Schedule of Equity Method Investments [Line Items]
Percentage owned in domestic subsidiaries	100.00%
5.375% Notes [Member]
Schedule of Equity Method Investments [Line Items]
Interest rate on notes guaranteed	5.375%	5.375%

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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