    <SEC-DOCUMENT>0000714562-24-000012-index.html : 20240315
    <SEC-HEADER>0000714562-24-000012.hdr.sgml : 20240315
    <ACCEPTANCE-DATETIME>20240315085457
    ACCESSION NUMBER:		0000714562-24-000012
    CONFORMED SUBMISSION TYPE:	DEF 14A
    PUBLIC DOCUMENT COUNT:		24
    CONFORMED PERIOD OF REPORT:	20240315
    FILED AS OF DATE:		20240315
    DATE AS OF CHANGE:		20240315

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			FIRST FINANCIAL CORP /IN/
    		CENTRAL INDEX KEY:			0000714562
    		STANDARD INDUSTRIAL CLASSIFICATION:	STATE COMMERCIAL BANKS [6022]
    		ORGANIZATION NAME:           	02 Finance
    		IRS NUMBER:				351546989
    		STATE OF INCORPORATION:			IN
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		DEF 14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	000-16759
    		FILM NUMBER:		24752651

    	BUSINESS ADDRESS:
    		STREET 1:		ONE FIRST FINANCIAL PLAZA
    		CITY:			TERRE HAUTE
    		STATE:			IN
    		ZIP:			47807
    		BUSINESS PHONE:		(812) 238-6000

    	MAIL ADDRESS:
    		STREET 1:		ONE FIRST FINANCIAL PLAZA
    		CITY:			TERRE HAUTE
    		STATE:			IN
    		ZIP:			47807

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	TERRE HAUTE FIRST CORP
    		DATE OF NAME CHANGE:	19850808
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEF 14A
    <SEQUENCE>1
    <FILENAME>tmb-20240315xdef14a.htm
    <DESCRIPTION>DEF 14A
    <TEXT>
    Document 1 - file: tmb-20240315xdef14a.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>tmb-20240315xdef14a001.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 2 - file: tmb-20240315xdef14a001.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>tmb-20240315xdef14a002.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 3 - file: tmb-20240315xdef14a002.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>tmb-20240315xdef14a005.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 4 - file: tmb-20240315xdef14a005.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>tmb-20240315xdef14a006.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 5 - file: tmb-20240315xdef14a006.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>tmb-20240315xdef14a007.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 6 - file: tmb-20240315xdef14a007.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>tmb-20240315xdef14a008.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 7 - file: tmb-20240315xdef14a008.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>tmb-20240315xdef14a009.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 8 - file: tmb-20240315xdef14a009.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>tmb-20240315xdef14a011.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 9 - file: tmb-20240315xdef14a011.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>tmb-20240315xdef14a012.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 10 - file: tmb-20240315xdef14a012.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.SCH
    <SEQUENCE>11
    <FILENAME>tmb-20240315.xsd
    <DESCRIPTION>EX-101.SCH
    <TEXT>
    Document 11 - file: tmb-20240315.xsd

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.DEF
    <SEQUENCE>12
    <FILENAME>tmb-20240315_def.xml
    <DESCRIPTION>EX-101.DEF
    <TEXT>
    Document 12 - file: tmb-20240315_def.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.LAB
    <SEQUENCE>13
    <FILENAME>tmb-20240315_lab.xml
    <DESCRIPTION>EX-101.LAB
    <TEXT>
    Document 13 - file: tmb-20240315_lab.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.PRE
    <SEQUENCE>14
    <FILENAME>tmb-20240315_pre.xml
    <DESCRIPTION>EX-101.PRE
    <TEXT>
    Document 14 - file: tmb-20240315_pre.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>15
    <FILENAME>R1.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 15 - file: R1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>16
    <FILENAME>R2.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 16 - file: R2.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>18
    <FILENAME>Show.js
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 18 - file: Show.js

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>19
    <FILENAME>report.css
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 19 - file: report.css

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>21
    <FILENAME>FilingSummary.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 21 - file: FilingSummary.html

    Document 21 - RAW XML: FilingSummary.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>JSON
    <SEQUENCE>23
    <FILENAME>MetaLinks.json
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 23 - file: MetaLinks.json

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>ZIP
    <SEQUENCE>24
    <FILENAME>0000714562-24-000012-xbrl.zip
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 24 - file: 0000714562-24-000012-xbrl.zip

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>25
    <FILENAME>tmb-20240315xdef14a_htm.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 25 - file: tmb-20240315xdef14a_htm.html

    Document 25 - RAW XML: tmb-20240315xdef14a_htm.xml

    </DOCUMENT>
    </SEC-DOCUMENT>