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Securities - Additional Information (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Jun. 30, 2023 | Jun. 30, 2022
Debt Securities, Available-for-sale [Line Items] |  |
Mortgage-backed securities with a book value | $ 231,672 | $ 245,052
Fair Value | $ 201,299 | 220,906
Percentage of equity securities | 10.00% |
Gross gains from sales of available for sale securities | $ 12 | 0
Gross losses from sales of available for sale securities | 183 | 275
Tax benefit to net realized gains (losses) | (49) | (78)
Investments in debt and marketable equity securities | $ 194,818 | $ 209,133
Temporarily impaired debt securities percentage of investment securities portfolio | 97.00% | 95.00%
Asset Pledged as Collateral with Right [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Carrying value of securities pledged as collateral | $ 138,022 | $ 125,209
Tax benefit to net realized gains (losses) | (49) | (78)
Mortgage-backed securities – GSE residential [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Mortgage-backed securities with a book value | 203,139 | 210,367
Fair Value | 175,726 | 188,185
Investments in debt and marketable equity securities | 172,930 | 181,629
Debt Securities [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Investments in debt and marketable equity securities | 194,818 | 209,133
Small Business Administration [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Mortgage-backed securities with a book value | 17,629 | 17,960
Fair Value | 15,233 | 16,442
Investments in debt and marketable equity securities | $ 13,910 | $ 14,983

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