    <SEC-DOCUMENT>0001084991-25-000044-index.html : 20250422
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    <ACCEPTANCE-DATETIME>20250422092635
    ACCESSION NUMBER:		0001084991-25-000044
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		40
    CONFORMED PERIOD OF REPORT:	20250418
    ITEM INFORMATION:		Entry into a Material Definitive Agreement
    ITEM INFORMATION:		Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20250422
    DATE AS OF CHANGE:		20250422

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			NATURAL GAS SERVICES GROUP INC
    		CENTRAL INDEX KEY:			0001084991
    		STANDARD INDUSTRIAL CLASSIFICATION:	OIL, GAS FIELD SERVICES, NBC [1389]
    		ORGANIZATION NAME:           	01 Energy & Transportation
    		EIN:				752811855
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-31398
    		FILM NUMBER:		25855841

    	BUSINESS ADDRESS:
    		STREET 1:		404 VETERANS AIRPARK LANE
    		STREET 2:		SUITE 300
    		CITY:			MIDLAND
    		STATE:			TX
    		ZIP:			79705
    		BUSINESS PHONE:		(432) 262-2700

    	MAIL ADDRESS:
    		STREET 1:		404 VETERANS AIRPARK LANE
    		STREET 2:		SUITE 300
    		CITY:			MIDLAND
    		STATE:			TX
    		ZIP:			79705
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>ngs-20250418.htm
    <DESCRIPTION>8-K
    <TEXT>
    Document 1 - file: ngs-20250418.htm

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    <DOCUMENT>
    <TYPE>EX-10.1
    <SEQUENCE>2
    <FILENAME>exhibit101_fourthxamendm.htm
    <DESCRIPTION>EX-10.1
    <TEXT>
    Document 2 - file: exhibit101_fourthxamendm.htm

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    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>3
    <FILENAME>exhibit991-creditexpansi.htm
    <DESCRIPTION>EX-99.1
    <TEXT>
    Document 3 - file: exhibit991-creditexpansi.htm

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    <DOCUMENT>
    <TYPE>EX-101.SCH
    <SEQUENCE>4
    <FILENAME>ngs-20250418.xsd
    <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT
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    <SEQUENCE>6
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    <SEQUENCE>7
    <FILENAME>exhibit101_fourthxamendm001.jpg
    <DESCRIPTION>IMAGE
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    <SEQUENCE>20
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    <SEQUENCE>27
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    Document 27 - file: exhibit101_fourthxamendm021.jpg

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    <SEQUENCE>28
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    Document 28 - file: exhibit101_fourthxamendm022.jpg

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    <SEQUENCE>29
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    Document 29 - file: exhibit101_fourthxamendm023.jpg

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    <SEQUENCE>30
    <FILENAME>exhibit101_fourthxamendm024.jpg
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    Document 30 - file: exhibit101_fourthxamendm024.jpg

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    <DOCUMENT>
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    <SEQUENCE>31
    <FILENAME>exhibit991-creditexpansi001.jpg
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    Document 31 - file: exhibit991-creditexpansi001.jpg

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    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>33
    <FILENAME>R1.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
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    Document 33 - file: R1.htm

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    <DOCUMENT>
    <TYPE>EXCEL
    <SEQUENCE>34
    <FILENAME>Financial_Report.xlsx
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 34 - file: Financial_Report.xlsx

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    <TYPE>XML
    <SEQUENCE>35
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    Document 35 - file: Show.js

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    <TYPE>XML
    <SEQUENCE>36
    <FILENAME>report.css
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    <TYPE>XML
    <SEQUENCE>38
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    Document 38 - RAW XML: FilingSummary.xml

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    <TYPE>JSON
    <SEQUENCE>40
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