    <SEC-DOCUMENT>0000939057-25-000285-index.html : 20251103
    <SEC-HEADER>0000939057-25-000285.hdr.sgml : 20251103
    <ACCEPTANCE-DATETIME>20251103123614
    ACCESSION NUMBER:		0000939057-25-000285
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		15
    CONFORMED PERIOD OF REPORT:	20251028
    ITEM INFORMATION:		Results of Operations and Financial Condition
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20251103
    DATE AS OF CHANGE:		20251103

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			RIVERVIEW BANCORP INC
    		CENTRAL INDEX KEY:			0001041368
    		STANDARD INDUSTRIAL CLASSIFICATION:	SAVINGS INSTITUTION, FEDERALLY CHARTERED [6035]
    		ORGANIZATION NAME:           	02 Finance
    		EIN:				911838969
    		STATE OF INCORPORATION:			WA
    		FISCAL YEAR END:			0331

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	000-22957
    		FILM NUMBER:		251443041

    	BUSINESS ADDRESS:
    		STREET 1:		900 WASHINGTON STREET
    		STREET 2:		SUITE 900
    		CITY:			VANCOUVER
    		STATE:			WA
    		ZIP:			98660
    		BUSINESS PHONE:		360-693-6650

    	MAIL ADDRESS:
    		STREET 1:		900 WASHINGTON STREET
    		STREET 2:		SUITE 900
    		CITY:			VANCOUVER
    		STATE:			WA
    		ZIP:			98660
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>riv8k102825.htm
    <TEXT>
    Document 1 - file: riv8k102825.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>2
    <FILENAME>riv8k102825exh991.htm
    <TEXT>
    Document 2 - file: riv8k102825exh991.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.SCH
    <SEQUENCE>3
    <FILENAME>rvsb-20251028.xsd
    <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA
    <TEXT>
    Document 3 - file: rvsb-20251028.xsd

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.LAB
    <SEQUENCE>4
    <FILENAME>rvsb-20251028_lab.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE
    <TEXT>
    Document 4 - file: rvsb-20251028_lab.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.PRE
    <SEQUENCE>5
    <FILENAME>rvsb-20251028_pre.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE
    <TEXT>
    Document 5 - file: rvsb-20251028_pre.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>image0.jpg
    <TEXT>
    Document 6 - file: image0.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>image1.jpg
    <TEXT>
    Document 7 - file: image1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>9
    <FILENAME>R1.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 9 - file: R1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>10
    <FILENAME>Show.js
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 10 - file: Show.js

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>11
    <FILENAME>report.css
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 11 - file: report.css

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>13
    <FILENAME>FilingSummary.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 13 - file: FilingSummary.html

    Document 13 - RAW XML: FilingSummary.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>JSON
    <SEQUENCE>15
    <FILENAME>MetaLinks.json
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 15 - file: MetaLinks.json

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>ZIP
    <SEQUENCE>16
    <FILENAME>0000939057-25-000285-xbrl.zip
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 16 - file: 0000939057-25-000285-xbrl.zip

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>17
    <FILENAME>riv8k102825_htm.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 17 - file: riv8k102825_htm.html

    Document 17 - RAW XML: riv8k102825_htm.xml

    </DOCUMENT>
    </SEC-DOCUMENT>