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Securities - Additional Information (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Jun. 30, 2024 | Jun. 30, 2023
Debt Securities, Available-for-sale [Line Items] |  |
Accrued interest receivable | $ 509 | $ 535
Mortgage-backed securities with a book value | 219,523 | 231,672
Fair Value | $ 190,475 | 201,299
Percentage of equity securities | 10.00% |
Gross gains from sales of available for sale securities | $ 0 | 12
Gross losses from sales of available for sale securities | 0 | 183
Tax benefit to net realized gains (losses) | 0 | 49
Investments in debt and marketable equity securities | $ 185,652 | $ 194,818
Temporarily impaired debt securities percentage of investment securities portfolio | 97.00% | 97.00%
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] | Interest Receivable | Interest Receivable
Asset Pledged as Collateral with Right [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Carrying value of securities pledged as collateral | $ 118,577 | $ 138,022
Tax benefit to net realized gains (losses) | 0 | 49
Mortgage-backed securities – GSE residential [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Mortgage-backed securities with a book value | 192,556 | 203,139
Fair Value | 166,236 | 175,726
Investments in debt and marketable equity securities | 163,470 | 172,930
Small Business Administration [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Mortgage-backed securities with a book value | 16,387 | 17,629
Fair Value | 14,086 | 15,233
Investments in debt and marketable equity securities | 14,086 | 13,910
Debt Securities [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Investments in debt and marketable equity securities | $ 185,652 | $ 194,818

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