    <SEC-DOCUMENT>0001084991-23-000019-index.html : 20230306
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    <ACCEPTANCE-DATETIME>20230306172814
    ACCESSION NUMBER:		0001084991-23-000019
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		14
    CONFORMED PERIOD OF REPORT:	20230228
    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:		Regulation FD Disclosure
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20230306
    DATE AS OF CHANGE:		20230306

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			NATURAL GAS SERVICES GROUP INC
    		CENTRAL INDEX KEY:			0001084991
    		STANDARD INDUSTRIAL CLASSIFICATION:	OIL, GAS FIELD SERVICES, NBC [1389]
    		IRS NUMBER:				752811855
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-31398
    		FILM NUMBER:		23710071

    	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>
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    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>ngs-20230228.htm
    <DESCRIPTION>8-K
    <TEXT>
    Document 1 - file: ngs-20230228.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-10.1
    <SEQUENCE>2
    <FILENAME>exhibit101tcbamendedandres.htm
    <DESCRIPTION>EX-10.1
    <TEXT>
    Document 2 - file: exhibit101tcbamendedandres.htm

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    <DOCUMENT>
    <TYPE>EX-10.2
    <SEQUENCE>3
    <FILENAME>exhibit102toretcbamendedan.htm
    <DESCRIPTION>EX-10.2
    <TEXT>
    Document 3 - file: exhibit102toretcbamendedan.htm

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    <TYPE>EX-101.SCH
    <SEQUENCE>4
    <FILENAME>ngs-20230228.xsd
    <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT
    <TEXT>
    Document 4 - file: ngs-20230228.xsd

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    <DOCUMENT>
    <TYPE>EX-101.LAB
    <SEQUENCE>5
    <FILENAME>ngs-20230228_lab.xml
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    <TEXT>
    Document 5 - file: ngs-20230228_lab.xml

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    <DOCUMENT>
    <TYPE>EX-101.PRE
    <SEQUENCE>6
    <FILENAME>ngs-20230228_pre.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT
    <TEXT>
    Document 6 - file: ngs-20230228_pre.xml

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    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>7
    <FILENAME>R1.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
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    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>8
    <FILENAME>ngs-20230228_htm.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 8 - file: ngs-20230228_htm.html

    Document 8 - RAW XML: ngs-20230228_htm.xml

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    <DOCUMENT>
    <TYPE>EXCEL
    <SEQUENCE>9
    <FILENAME>Financial_Report.xlsx
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
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    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>10
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    <TEXT>
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    <TYPE>XML
    <SEQUENCE>11
    <FILENAME>report.css
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    <TEXT>
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    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>12
    <FILENAME>FilingSummary.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 12 - file: FilingSummary.html

    Document 12 - RAW XML: FilingSummary.xml

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    <DOCUMENT>
    <TYPE>JSON
    <SEQUENCE>14
    <FILENAME>MetaLinks.json
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 14 - file: MetaLinks.json

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    <DOCUMENT>
    <TYPE>ZIP
    <SEQUENCE>15
    <FILENAME>0001084991-23-000019-xbrl.zip
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
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