    <SEC-DOCUMENT>0001489096-25-000097-index.html : 20250618
    <SEC-HEADER>0001489096-25-000097.hdr.sgml : 20250618
    <ACCEPTANCE-DATETIME>20250618121239
    ACCESSION NUMBER:		0001489096-25-000097
    CONFORMED SUBMISSION TYPE:	DEF 14A
    PUBLIC DOCUMENT COUNT:		28
    CONFORMED PERIOD OF REPORT:	20250728
    FILED AS OF DATE:		20250618
    DATE AS OF CHANGE:		20250618

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			Thermon Group Holdings, Inc.
    		CENTRAL INDEX KEY:			0001489096
    		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRICAL INDUSTRIAL APPARATUS [3620]
    		ORGANIZATION NAME:           	04 Manufacturing
    		EIN:				272228185
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			0331

    	FILING VALUES:
    		FORM TYPE:		DEF 14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-35159
    		FILM NUMBER:		251055821

    	BUSINESS ADDRESS:
    		STREET 1:		7171 SOUTHWEST PARKWAY
    		STREET 2:		BUILDING 300, SUITE 200
    		CITY:			AUSTIN
    		STATE:			TX
    		ZIP:			78735
    		BUSINESS PHONE:		5126900600

    	MAIL ADDRESS:
    		STREET 1:		7171 SOUTHWEST PARKWAY
    		STREET 2:		BUILDING 300, SUITE 200
    		CITY:			AUSTIN
    		STATE:			TX
    		ZIP:			78735
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEF 14A
    <SEQUENCE>1
    <FILENAME>thr-20250618.htm
    <DESCRIPTION>DEF 14A
    <TEXT>
    Document 1 - file: thr-20250618.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.SCH
    <SEQUENCE>2
    <FILENAME>thr-20250618.xsd
    <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT
    <TEXT>
    Document 2 - file: thr-20250618.xsd

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>thr-20250618_g1.jpg
    <TEXT>
    Document 3 - file: thr-20250618_g1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>thr-20250618_g10.jpg
    <TEXT>
    Document 4 - file: thr-20250618_g10.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>thr-20250618_g11.jpg
    <TEXT>
    Document 5 - file: thr-20250618_g11.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>thr-20250618_g12.jpg
    <TEXT>
    Document 6 - file: thr-20250618_g12.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>thr-20250618_g13.jpg
    <TEXT>
    Document 7 - file: thr-20250618_g13.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>thr-20250618_g14.jpg
    <TEXT>
    Document 8 - file: thr-20250618_g14.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>thr-20250618_g15.jpg
    <TEXT>
    Document 9 - file: thr-20250618_g15.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>thr-20250618_g2.jpg
    <TEXT>
    Document 10 - file: thr-20250618_g2.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>thr-20250618_g3.jpg
    <TEXT>
    Document 11 - file: thr-20250618_g3.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>12
    <FILENAME>thr-20250618_g4.jpg
    <TEXT>
    Document 12 - file: thr-20250618_g4.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>13
    <FILENAME>thr-20250618_g5.jpg
    <TEXT>
    Document 13 - file: thr-20250618_g5.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>14
    <FILENAME>thr-20250618_g6.jpg
    <TEXT>
    Document 14 - file: thr-20250618_g6.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>15
    <FILENAME>thr-20250618_g7.jpg
    <TEXT>
    Document 15 - file: thr-20250618_g7.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>16
    <FILENAME>thr-20250618_g8.jpg
    <TEXT>
    Document 16 - file: thr-20250618_g8.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>17
    <FILENAME>thr-20250618_g9.jpg
    <TEXT>
    Document 17 - file: thr-20250618_g9.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>19
    <FILENAME>R1.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 19 - file: R1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>20
    <FILENAME>R2.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 20 - file: R2.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>21
    <FILENAME>R3.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 21 - file: R3.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>22
    <FILENAME>R4.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 22 - file: R4.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>23
    <FILENAME>Show.js
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 23 - file: Show.js

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>24
    <FILENAME>report.css
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 24 - file: report.css

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>26
    <FILENAME>FilingSummary.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 26 - file: FilingSummary.html

    Document 26 - RAW XML: FilingSummary.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>JSON
    <SEQUENCE>28
    <FILENAME>MetaLinks.json
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 28 - file: MetaLinks.json

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>ZIP
    <SEQUENCE>29
    <FILENAME>0001489096-25-000097-xbrl.zip
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 29 - file: 0001489096-25-000097-xbrl.zip

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>30
    <FILENAME>thr-20250618_htm.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 30 - file: thr-20250618_htm.html

    Document 30 - RAW XML: thr-20250618_htm.xml

    </DOCUMENT>
    </SEC-DOCUMENT>