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Securities - Additional Information (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Jun. 30, 2025 | Jun. 30, 2024
Debt Securities, Available-for-sale [Line Items] |  |
Accrued interest receivable | $ 482 | $ 509
Mortgage-backed securities with a book value | 210,889 | 219,523
Fair Value | $ 187,753 | 190,475
Percentage of equity securities | 10.00% |
Gross gains from sales of available for sale securities | $ 30 | 0
Gross losses from sales of available for sale securities | 101 | 0
Tax benefit to net realized gains (losses) | (20) | 0
Investments in debt and marketable equity securities | $ 173,405 | $ 185,652
Temporarily impaired debt securities percentage of investment securities portfolio | 92.00% | 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 | $ 102,268 | $ 118,577
Tax benefit to net realized gains (losses) | 20 | 0
Mortgage-backed securities – GSE residential [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Mortgage-backed securities with a book value | 192,261 | 192,556
Fair Value | 171,079 | 166,236
Investments in debt and marketable equity securities | 158,479 | 163,470
Small Business Administration [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Mortgage-backed securities with a book value | 14,894 | 16,387
Fair Value | 13,114 | 14,086
Investments in debt and marketable equity securities | 13,114 | 14,086
Debt Securities [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Investments in debt and marketable equity securities | $ 173,405 | $ 185,652

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