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Condensed Consolidating Financial Statements - Additional Information (Detail)
Dec. 31, 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]    
Percent on aggregate principal amount of outstanding 5.375% 5.375%