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Securities - Additional Information (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Jun. 30, 2022 | Jun. 30, 2021
Debt Securities, Available-for-sale [Line Items] |  |
Mortgage-backed securities with a book value | $ 245,052 | $ 186,589
Fair Value | $ 220,906 | 189,891
Percentage of equity securities | 10.00% |
Gross gains from sales of available for sale securities | $ 0 | 327
Gross losses from sales of available for sale securities | 275 | 7
Tax benefit to net realized gains (losses) | (78) | 92
Investments in debt and marketable equity securities | $ 209,133 | $ 85,118
Temporarily impaired debt securities percentage of investment securities portfolio | 95.00% | 45.00%
Asset Pledged as Collateral with Right [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Carrying value of securities pledged as collateral | $ 125,209 | $ 96,429
U.S. Government and Federal Agency and Government Sponsored Enterprises (GSEs) [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Mortgage-backed securities with a book value | 9,488 | 7,522
Fair Value | 9,121 | 8,039
Investments in debt and marketable equity securities | 9,121 |
Mortgage-backed Securities - GSE Residential [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Mortgage-backed securities with a book value | 210,367 | 167,711
Fair Value | 188,185 | 170,415
Investments in debt and marketable equity securities | 181,629 | 79,162
Debt Securities [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Investments in debt and marketable equity securities | 209,133 | 85,118
Small Business Administration [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Mortgage-backed securities with a book value | 17,960 | 9,115
Fair Value | 16,442 | 9,190
Investments in debt and marketable equity securities | $ 14,983 | $ 5,956

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