    <SEC-DOCUMENT>0001084991-25-000116-index.html : 20250813
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    <ACCEPTANCE-DATETIME>20250813171119
    ACCESSION NUMBER:		0001084991-25-000116
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		26
    CONFORMED PERIOD OF REPORT:	20250812
    ITEM INFORMATION:		Results of Operations and Financial Condition
    ITEM INFORMATION:		Regulation FD Disclosure
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20250813
    DATE AS OF CHANGE:		20250813

    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:		251212835

    	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-20250812.htm
    <DESCRIPTION>8-K
    <TEXT>
    Document 1 - file: ngs-20250812.htm

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    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>2
    <FILENAME>exhibit991-earningscallt.htm
    <DESCRIPTION>EX-99.1
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    Document 2 - file: exhibit991-earningscallt.htm

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    <DOCUMENT>
    <TYPE>EX-101.SCH
    <SEQUENCE>3
    <FILENAME>ngs-20250812.xsd
    <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT
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    Document 3 - file: ngs-20250812.xsd

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    <SEQUENCE>6
    <FILENAME>exhibit991-earningscallt001.jpg
    <DESCRIPTION>IMAGE
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    <SEQUENCE>9
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    <SEQUENCE>10
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    <SEQUENCE>11
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    Document 12 - file: exhibit991-earningscallt007.jpg

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    <SEQUENCE>15
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    Document 15 - file: exhibit991-earningscallt010.jpg

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    <SEQUENCE>16
    <FILENAME>exhibit991-earningscallt011.jpg
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    Document 16 - file: exhibit991-earningscallt011.jpg

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    <SEQUENCE>17
    <FILENAME>exhibit991-earningscallt012.jpg
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    Document 17 - file: exhibit991-earningscallt012.jpg

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    <SEQUENCE>18
    <FILENAME>exhibit991-earningscallt013.jpg
    <DESCRIPTION>IMAGE
    <TEXT>
    Document 18 - file: exhibit991-earningscallt013.jpg

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    <SEQUENCE>20
    <FILENAME>R1.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
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    <TYPE>XML
    <SEQUENCE>21
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    <TYPE>XML
    <SEQUENCE>22
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    <TYPE>XML
    <SEQUENCE>24
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    Document 24 - file: FilingSummary.html

    Document 24 - RAW XML: FilingSummary.xml

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    <TYPE>JSON
    <SEQUENCE>26
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    <SEQUENCE>27
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