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ALLOWANCE FOR LOAN LOSSES - TDRs by Interest Accrual Status (Details) - USD ($) $ in Thousands | Sep. 30, 2022 | Mar. 31, 2022
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Accrual | $ 476 | $ 495
Nonaccrual | 201 | 222
Total | 677 | 717
Commercial Real Estate Portfolio Segment | Commercial Business |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Nonaccrual | 90 | 100
Total | 90 | 100
Commercial Real Estate Portfolio Segment | Commercial Real Estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Nonaccrual | 111 | 122
Total | 111 | 122
Consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Accrual | 476 | 495
Total | $ 476 | $ 495

X
- Definition Represents the monetary amount of TDR by Accrual Status, Accrual, as of the indicated date. + References No definition available. + Details
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Namespace Prefix: | rvsb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents the monetary amount of TDR by Accrual Status, Non-accrual, as of the indicated date. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
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Period Type: | instant

X
- Definition Represents the monetary amount of TDR by Accrual Status, Total, as of the indicated date. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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X
- Details
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- Details
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X
- Details
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Period Type: |