    <SEC-DOCUMENT>0001193125-23-145658-index.html : 20230516
    <SEC-HEADER>0001193125-23-145658.hdr.sgml : 20230516
    <ACCEPTANCE-DATETIME>20230516080041
    ACCESSION NUMBER:		0001193125-23-145658
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		55
    CONFORMED PERIOD OF REPORT:	20230516
    ITEM INFORMATION:		Regulation FD Disclosure
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20230516
    DATE AS OF CHANGE:		20230516

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			CIVISTA BANCSHARES, INC.
    		CENTRAL INDEX KEY:			0000944745
    		STANDARD INDUSTRIAL CLASSIFICATION:	STATE COMMERCIAL BANKS [6022]
    		IRS NUMBER:				341558688
    		STATE OF INCORPORATION:			OH
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-36192
    		FILM NUMBER:		23925614

    	BUSINESS ADDRESS:
    		STREET 1:		100 EAST WATER ST
    		STREET 2:		P O BOX 5016
    		CITY:			SANDUSKY
    		STATE:			OH
    		ZIP:			44870
    		BUSINESS PHONE:		4196254121

    	MAIL ADDRESS:
    		STREET 1:		100 EAST WATER ST
    		STREET 2:		P O BOX 5016
    		CITY:			SANDUSKY
    		STATE:			OH
    		ZIP:			44870

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	FIRST CITIZENS BANC CORP /OH
    		DATE OF NAME CHANGE:	19950502
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>d493856d8k.htm
    <DESCRIPTION>8-K
    <TEXT>
    Document 1 - file: d493856d8k.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>2
    <FILENAME>d493856dex991.htm
    <DESCRIPTION>EX-99.1
    <TEXT>
    Document 2 - file: d493856dex991.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.SCH
    <SEQUENCE>3
    <FILENAME>civb-20230516.xsd
    <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA
    <TEXT>
    Document 3 - file: civb-20230516.xsd

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.LAB
    <SEQUENCE>4
    <FILENAME>civb-20230516_lab.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE
    <TEXT>
    Document 4 - file: civb-20230516_lab.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.PRE
    <SEQUENCE>5
    <FILENAME>civb-20230516_pre.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE
    <TEXT>
    Document 5 - file: civb-20230516_pre.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>g493856ex99_1s10g1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 6 - file: g493856ex99_1s10g1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>g493856ex99_1s11g1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 7 - file: g493856ex99_1s11g1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>g493856ex99_1s12g1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 8 - file: g493856ex99_1s12g1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>g493856ex99_1s13g1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 9 - file: g493856ex99_1s13g1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>g493856ex99_1s14g1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 10 - file: g493856ex99_1s14g1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>g493856ex99_1s15g1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 11 - file: g493856ex99_1s15g1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>12
    <FILENAME>g493856ex99_1s16g1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 12 - file: g493856ex99_1s16g1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>13
    <FILENAME>g493856ex99_1s17g1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 13 - file: g493856ex99_1s17g1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>14
    <FILENAME>g493856ex99_1s18g1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 14 - file: g493856ex99_1s18g1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>15
    <FILENAME>g493856ex99_1s19g1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 15 - file: g493856ex99_1s19g1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>16
    <FILENAME>g493856ex99_1s1g1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 16 - file: g493856ex99_1s1g1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>17
    <FILENAME>g493856ex99_1s20g1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 17 - file: g493856ex99_1s20g1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>18
    <FILENAME>g493856ex99_1s21g1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 18 - file: g493856ex99_1s21g1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>19
    <FILENAME>g493856ex99_1s22g1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 19 - file: g493856ex99_1s22g1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>20
    <FILENAME>g493856ex99_1s23g1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 20 - file: g493856ex99_1s23g1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>21
    <FILENAME>g493856ex99_1s24g1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 21 - file: g493856ex99_1s24g1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>22
    <FILENAME>g493856ex99_1s25g1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 22 - file: g493856ex99_1s25g1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>23
    <FILENAME>g493856ex99_1s26g1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 23 - file: g493856ex99_1s26g1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>24
    <FILENAME>g493856ex99_1s27g1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 24 - file: g493856ex99_1s27g1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>25
    <FILENAME>g493856ex99_1s28g1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 25 - file: g493856ex99_1s28g1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>26
    <FILENAME>g493856ex99_1s29g1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 26 - file: g493856ex99_1s29g1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>27
    <FILENAME>g493856ex99_1s2g1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 27 - file: g493856ex99_1s2g1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>28
    <FILENAME>g493856ex99_1s30g1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 28 - file: g493856ex99_1s30g1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>29
    <FILENAME>g493856ex99_1s31g1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 29 - file: g493856ex99_1s31g1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>30
    <FILENAME>g493856ex99_1s32g1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 30 - file: g493856ex99_1s32g1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>31
    <FILENAME>g493856ex99_1s33g1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 31 - file: g493856ex99_1s33g1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>32
    <FILENAME>g493856ex99_1s34g1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 32 - file: g493856ex99_1s34g1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>33
    <FILENAME>g493856ex99_1s35g1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 33 - file: g493856ex99_1s35g1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>34
    <FILENAME>g493856ex99_1s36g1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 34 - file: g493856ex99_1s36g1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>35
    <FILENAME>g493856ex99_1s37g1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 35 - file: g493856ex99_1s37g1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>36
    <FILENAME>g493856ex99_1s38g1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 36 - file: g493856ex99_1s38g1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>37
    <FILENAME>g493856ex99_1s39g1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 37 - file: g493856ex99_1s39g1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>38
    <FILENAME>g493856ex99_1s3g1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 38 - file: g493856ex99_1s3g1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>39
    <FILENAME>g493856ex99_1s40g1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 39 - file: g493856ex99_1s40g1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>40
    <FILENAME>g493856ex99_1s41g1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 40 - file: g493856ex99_1s41g1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>41
    <FILENAME>g493856ex99_1s42g1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 41 - file: g493856ex99_1s42g1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>42
    <FILENAME>g493856ex99_1s4g1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 42 - file: g493856ex99_1s4g1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>43
    <FILENAME>g493856ex99_1s5g1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 43 - file: g493856ex99_1s5g1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>44
    <FILENAME>g493856ex99_1s6g1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 44 - file: g493856ex99_1s6g1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>45
    <FILENAME>g493856ex99_1s7g1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 45 - file: g493856ex99_1s7g1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>46
    <FILENAME>g493856ex99_1s8g1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 46 - file: g493856ex99_1s8g1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>47
    <FILENAME>g493856ex99_1s9g1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 47 - file: g493856ex99_1s9g1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>48
    <FILENAME>R1.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 48 - file: R1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>49
    <FILENAME>d493856d8k_htm.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 49 - file: d493856d8k_htm.html

    Document 49 - RAW XML: d493856d8k_htm.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EXCEL
    <SEQUENCE>50
    <FILENAME>Financial_Report.xlsx
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 50 - file: Financial_Report.xlsx

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>51
    <FILENAME>Show.js
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 51 - file: Show.js

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>52
    <FILENAME>report.css
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 52 - file: report.css

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>53
    <FILENAME>FilingSummary.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 53 - file: FilingSummary.html

    Document 53 - RAW XML: FilingSummary.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>JSON
    <SEQUENCE>55
    <FILENAME>MetaLinks.json
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 55 - file: MetaLinks.json

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>ZIP
    <SEQUENCE>56
    <FILENAME>0001193125-23-145658-xbrl.zip
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 56 - file: 0001193125-23-145658-xbrl.zip

    </DOCUMENT>
    </SEC-DOCUMENT>