    <SEC-DOCUMENT>0000041719-22-000063-index.html : 20221206
    <SEC-HEADER>0000041719-22-000063.hdr.sgml : 20221206
    <ACCEPTANCE-DATETIME>20221206164710
    ACCESSION NUMBER:		0000041719-22-000063
    CONFORMED SUBMISSION TYPE:	8-K/A
    PUBLIC DOCUMENT COUNT:		45
    CONFORMED PERIOD OF REPORT:	20221202
    ITEM INFORMATION:		Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20221206
    DATE AS OF CHANGE:		20221206

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			Glatfelter Corp
    		CENTRAL INDEX KEY:			0000041719
    		STANDARD INDUSTRIAL CLASSIFICATION:	PAPER MILLS [2621]
    		IRS NUMBER:				230628360
    		STATE OF INCORPORATION:			PA
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K/A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-03560
    		FILM NUMBER:		221448258

    	BUSINESS ADDRESS:
    		STREET 1:		4350 CONGRESS STREET
    		STREET 2:		SUITE 600
    		CITY:			CHARLOTTE
    		STATE:			NC
    		ZIP:			28209
    		BUSINESS PHONE:		866-744-7380

    	MAIL ADDRESS:
    		STREET 1:		4350 CONGRESS STREET
    		STREET 2:		SUITE 600
    		CITY:			CHARLOTTE
    		STATE:			NC
    		ZIP:			28209

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	GLATFELTER P H CO
    		DATE OF NAME CHANGE:	19920703
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>8-K/A
    <SEQUENCE>1
    <FILENAME>glt-20221202.htm
    <DESCRIPTION>8-K/A
    <TEXT>
    Document 1 - file: glt-20221202.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-3.1
    <SEQUENCE>2
    <FILENAME>glt-amendedandrestatedby.htm
    <DESCRIPTION>EX-3.1
    <TEXT>
    Document 2 - file: glt-amendedandrestatedby.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.SCH
    <SEQUENCE>3
    <FILENAME>glt-20221202.xsd
    <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT
    <TEXT>
    Document 3 - file: glt-20221202.xsd

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.LAB
    <SEQUENCE>4
    <FILENAME>glt-20221202_lab.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT
    <TEXT>
    Document 4 - file: glt-20221202_lab.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.PRE
    <SEQUENCE>5
    <FILENAME>glt-20221202_pre.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT
    <TEXT>
    Document 5 - file: glt-20221202_pre.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>glt-amendedandrestatedby001.jpg
    <TEXT>
    Document 6 - file: glt-amendedandrestatedby001.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>glt-amendedandrestatedby002.jpg
    <TEXT>
    Document 7 - file: glt-amendedandrestatedby002.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>glt-amendedandrestatedby003.jpg
    <TEXT>
    Document 8 - file: glt-amendedandrestatedby003.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>glt-amendedandrestatedby004.jpg
    <TEXT>
    Document 9 - file: glt-amendedandrestatedby004.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>glt-amendedandrestatedby005.jpg
    <TEXT>
    Document 10 - file: glt-amendedandrestatedby005.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>glt-amendedandrestatedby006.jpg
    <TEXT>
    Document 11 - file: glt-amendedandrestatedby006.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>12
    <FILENAME>glt-amendedandrestatedby007.jpg
    <TEXT>
    Document 12 - file: glt-amendedandrestatedby007.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>13
    <FILENAME>glt-amendedandrestatedby008.jpg
    <TEXT>
    Document 13 - file: glt-amendedandrestatedby008.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>14
    <FILENAME>glt-amendedandrestatedby009.jpg
    <TEXT>
    Document 14 - file: glt-amendedandrestatedby009.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>15
    <FILENAME>glt-amendedandrestatedby010.jpg
    <TEXT>
    Document 15 - file: glt-amendedandrestatedby010.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>16
    <FILENAME>glt-amendedandrestatedby011.jpg
    <TEXT>
    Document 16 - file: glt-amendedandrestatedby011.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>17
    <FILENAME>glt-amendedandrestatedby012.jpg
    <TEXT>
    Document 17 - file: glt-amendedandrestatedby012.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>18
    <FILENAME>glt-amendedandrestatedby013.jpg
    <TEXT>
    Document 18 - file: glt-amendedandrestatedby013.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>19
    <FILENAME>glt-amendedandrestatedby014.jpg
    <TEXT>
    Document 19 - file: glt-amendedandrestatedby014.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>20
    <FILENAME>glt-amendedandrestatedby015.jpg
    <TEXT>
    Document 20 - file: glt-amendedandrestatedby015.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>21
    <FILENAME>glt-amendedandrestatedby016.jpg
    <TEXT>
    Document 21 - file: glt-amendedandrestatedby016.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>22
    <FILENAME>glt-amendedandrestatedby017.jpg
    <TEXT>
    Document 22 - file: glt-amendedandrestatedby017.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>23
    <FILENAME>glt-amendedandrestatedby018.jpg
    <TEXT>
    Document 23 - file: glt-amendedandrestatedby018.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>24
    <FILENAME>glt-amendedandrestatedby019.jpg
    <TEXT>
    Document 24 - file: glt-amendedandrestatedby019.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>25
    <FILENAME>glt-amendedandrestatedby020.jpg
    <TEXT>
    Document 25 - file: glt-amendedandrestatedby020.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>26
    <FILENAME>glt-amendedandrestatedby021.jpg
    <TEXT>
    Document 26 - file: glt-amendedandrestatedby021.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>27
    <FILENAME>glt-amendedandrestatedby022.jpg
    <TEXT>
    Document 27 - file: glt-amendedandrestatedby022.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>28
    <FILENAME>glt-amendedandrestatedby023.jpg
    <TEXT>
    Document 28 - file: glt-amendedandrestatedby023.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>29
    <FILENAME>glt-amendedandrestatedby024.jpg
    <TEXT>
    Document 29 - file: glt-amendedandrestatedby024.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>30
    <FILENAME>glt-amendedandrestatedby025.jpg
    <TEXT>
    Document 30 - file: glt-amendedandrestatedby025.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>31
    <FILENAME>glt-amendedandrestatedby026.jpg
    <TEXT>
    Document 31 - file: glt-amendedandrestatedby026.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>32
    <FILENAME>glt-amendedandrestatedby027.jpg
    <TEXT>
    Document 32 - file: glt-amendedandrestatedby027.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>33
    <FILENAME>glt-amendedandrestatedby028.jpg
    <TEXT>
    Document 33 - file: glt-amendedandrestatedby028.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>34
    <FILENAME>glt-amendedandrestatedby029.jpg
    <TEXT>
    Document 34 - file: glt-amendedandrestatedby029.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>35
    <FILENAME>glt-amendedandrestatedby030.jpg
    <TEXT>
    Document 35 - file: glt-amendedandrestatedby030.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>36
    <FILENAME>glt-amendedandrestatedby031.jpg
    <TEXT>
    Document 36 - file: glt-amendedandrestatedby031.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>37
    <FILENAME>glt-amendedandrestatedby032.jpg
    <TEXT>
    Document 37 - file: glt-amendedandrestatedby032.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>38
    <FILENAME>R1.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 38 - file: R1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>39
    <FILENAME>glt-20221202_htm.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 39 - file: glt-20221202_htm.html

    Document 39 - RAW XML: glt-20221202_htm.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EXCEL
    <SEQUENCE>40
    <FILENAME>Financial_Report.xlsx
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 40 - file: Financial_Report.xlsx

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>41
    <FILENAME>Show.js
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 41 - file: Show.js

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>42
    <FILENAME>report.css
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 42 - file: report.css

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>43
    <FILENAME>FilingSummary.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 43 - file: FilingSummary.html

    Document 43 - RAW XML: FilingSummary.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>JSON
    <SEQUENCE>45
    <FILENAME>MetaLinks.json
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 45 - file: MetaLinks.json

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>ZIP
    <SEQUENCE>46
    <FILENAME>0000041719-22-000063-xbrl.zip
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 46 - file: 0000041719-22-000063-xbrl.zip

    </DOCUMENT>
    </SEC-DOCUMENT>