    <SEC-DOCUMENT>0001437749-24-008693-index.html : 20240320
    <SEC-HEADER>0001437749-24-008693.hdr.sgml : 20240320
    <ACCEPTANCE-DATETIME>20240320163034
    ACCESSION NUMBER:		0001437749-24-008693
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		38
    CONFORMED PERIOD OF REPORT:	20240320
    ITEM INFORMATION:		Regulation FD Disclosure
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20240320
    DATE AS OF CHANGE:		20240320

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			NATIONAL BANKSHARES INC
    		CENTRAL INDEX KEY:			0000796534
    		STANDARD INDUSTRIAL CLASSIFICATION:	NATIONAL COMMERCIAL BANKS [6021]
    		ORGANIZATION NAME:           	02 Finance
    		IRS NUMBER:				541375874
    		STATE OF INCORPORATION:			VA
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	000-15204
    		FILM NUMBER:		24768180

    	BUSINESS ADDRESS:
    		STREET 1:		101 HUBBARD STREET
    		STREET 2:		PO BOX 90002
    		CITY:			BLACKSBURG
    		STATE:			VA
    		ZIP:			24060
    		BUSINESS PHONE:		540-951-6300

    	MAIL ADDRESS:
    		STREET 1:		101 HUBBARD STREET
    		STREET 2:		PO BOX 90002
    		CITY:			BLACKSBURG
    		STATE:			VA
    		ZIP:			24060
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>nksh20240320_8k.htm
    <DESCRIPTION>FORM 8-K
    <TEXT>
    Document 1 - file: nksh20240320_8k.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>2
    <FILENAME>ex_642438.htm
    <DESCRIPTION>EXHIBIT 99.1
    <TEXT>
    Document 2 - file: ex_642438.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.SCH
    <SEQUENCE>3
    <FILENAME>nksh-20240320.xsd
    <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA
    <TEXT>
    Document 3 - file: nksh-20240320.xsd

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.DEF
    <SEQUENCE>4
    <FILENAME>nksh-20240320_def.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION DEFINITION LINKBASE
    <TEXT>
    Document 4 - file: nksh-20240320_def.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.LAB
    <SEQUENCE>5
    <FILENAME>nksh-20240320_lab.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE
    <TEXT>
    Document 5 - file: nksh-20240320_lab.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.PRE
    <SEQUENCE>6
    <FILENAME>nksh-20240320_pre.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE
    <TEXT>
    Document 6 - file: nksh-20240320_pre.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>b01.jpg
    <TEXT>
    Document 7 - file: b01.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>b02.jpg
    <TEXT>
    Document 8 - file: b02.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>b03.jpg
    <TEXT>
    Document 9 - file: b03.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>b04.jpg
    <TEXT>
    Document 10 - file: b04.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>b05.jpg
    <TEXT>
    Document 11 - file: b05.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>12
    <FILENAME>b06.jpg
    <TEXT>
    Document 12 - file: b06.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>13
    <FILENAME>b07.jpg
    <TEXT>
    Document 13 - file: b07.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>14
    <FILENAME>b08.jpg
    <TEXT>
    Document 14 - file: b08.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>15
    <FILENAME>b09.jpg
    <TEXT>
    Document 15 - file: b09.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>16
    <FILENAME>b10.jpg
    <TEXT>
    Document 16 - file: b10.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>17
    <FILENAME>b11.jpg
    <TEXT>
    Document 17 - file: b11.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>18
    <FILENAME>b12.jpg
    <TEXT>
    Document 18 - file: b12.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>19
    <FILENAME>b13.jpg
    <TEXT>
    Document 19 - file: b13.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>20
    <FILENAME>b14.jpg
    <TEXT>
    Document 20 - file: b14.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>21
    <FILENAME>b15.jpg
    <TEXT>
    Document 21 - file: b15.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>22
    <FILENAME>b16.jpg
    <TEXT>
    Document 22 - file: b16.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>23
    <FILENAME>b17.jpg
    <TEXT>
    Document 23 - file: b17.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>24
    <FILENAME>b18.jpg
    <TEXT>
    Document 24 - file: b18.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>25
    <FILENAME>b19.jpg
    <TEXT>
    Document 25 - file: b19.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>26
    <FILENAME>b20.jpg
    <TEXT>
    Document 26 - file: b20.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>27
    <FILENAME>b21.jpg
    <TEXT>
    Document 27 - file: b21.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>28
    <FILENAME>b22.jpg
    <TEXT>
    Document 28 - file: b22.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>29
    <FILENAME>b23.jpg
    <TEXT>
    Document 29 - file: b23.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>31
    <FILENAME>R1.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 31 - file: R1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EXCEL
    <SEQUENCE>32
    <FILENAME>Financial_Report.xlsx
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 32 - file: Financial_Report.xlsx

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>33
    <FILENAME>Show.js
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 33 - file: Show.js

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>34
    <FILENAME>report.css
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 34 - file: report.css

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>36
    <FILENAME>FilingSummary.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 36 - file: FilingSummary.html

    Document 36 - RAW XML: FilingSummary.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>JSON
    <SEQUENCE>38
    <FILENAME>MetaLinks.json
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 38 - file: MetaLinks.json

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>ZIP
    <SEQUENCE>39
    <FILENAME>0001437749-24-008693-xbrl.zip
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 39 - file: 0001437749-24-008693-xbrl.zip

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>41
    <FILENAME>nksh20240320_8k_htm.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 41 - file: nksh20240320_8k_htm.html

    Document 41 - RAW XML: nksh20240320_8k_htm.xml

    </DOCUMENT>
    </SEC-DOCUMENT>