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v3.23.1

Loans and Allowance for Credit Losses- Additional Information (Detail) | 9 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2023 USD ($) SecurityLoan Loans | Jun. 30, 2022 USD ($) SecurityLoan Loans | Mar. 31, 2022 USD ($) Loans
Loans and Allowance for Credit Losses [Line Items] |  |  |
Maximum term of fixed-rate one- to four-family residential mortgage loans | 15 years |  |
Number of default loans | SecurityLoan | 0 | 0 |
Investment recorded prior to modification | $ 0 | $ 0 |
Loans and Leases Receivable, Gross | 585,814,000 | 525,736,000 | $ 505,712,000
Allowance for Loan and Lease Losses, Loans Acquired | 143,000 |  |
Fair Value, Concentration of Risk, Collateral Policy [Member] |  |  |
Loans and Allowance for Credit Losses [Line Items] |  |  |
Commercial and multi-family real estate | $ 334,513,000 | 290,972,000 |
Troubled Debt Restructurings [Member] |  |  |
Loans and Allowance for Credit Losses [Line Items] |  |  |
Minimum period for default | 90 days |  |
Commercial Business Loans [Member] |  |  |
Loans and Allowance for Credit Losses [Line Items] |  |  |
Loans and Leases Receivable, Gross | $ 71,129,000 | $ 80,418,000 | $ 81,399,000
Allowance for Loan and Lease Losses, Loans Acquired | $ 143,000 |  |
Commercial Business Loans [Member] | Small Business Administration Paycheck Protection Programme Loans [Member] |  |  |
Loans and Allowance for Credit Losses [Line Items] |  |  |
Percentage of government guarantee for loans as per scheme | 100.00% |  |
Commercial Portfolio And Commercial Residential Portfolio [Member] |  |  |
Loans and Allowance for Credit Losses [Line Items] |  |  |
Number of loans as on closing date | Loans | 0 | 0 | 18
Loans and Leases Receivable, Gross |  |  | $ 1,200,000
One- to four-family [Member] |  |  |
Loans and Allowance for Credit Losses [Line Items] |  |  |
Loans held for sale | $ 0 | $ 227,000 |
Maximum term of fixed-rate one- to four-family residential mortgage loans | 15 years |  |
Loans and Leases Receivable, Gross | $ 158,388,000 | 132,474,000 | $ 124,590,000
Allowance for Loan and Lease Losses, Loans Acquired | 0 |  |
Purchased Loans and Loan Participations [Member] |  |  |
Loans and Allowance for Credit Losses [Line Items] |  |  |
Approximate amount of purchase loans included in loans receivable | 675,000 | 1,570,000 |
Approximate amount of loans included on out-of-area participation | 41,857,000 | 29,972,000 |
Amount within 100 miles of primary area | $ 23,646,000 | $ 13,234,000 |
Non troubled debt restructuring [Member] | Covid Nineteen [Member] | Financing receivables, 30 to 59 days past due [Member] |  |  |
Loans and Allowance for Credit Losses [Line Items] |  |  |
Financing receivable number of days past due | 30 days |  |
Period of loan excecution | 60 days |  |

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