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Securities - Additional Information (Detail) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Jun. 30, 2022
Debt Securities, Available-for-sale [Line Items] |  |  |
Mortgage-backed securities with a book value | $ 238,721 |  | $ 245,052
Fair Value | $ 206,619 |  | 220,906
Percentage of equity securities | 10.00% |  |
Repurchase agreements | $ 9,720 |  | 9,244
Gross gains from sales of available for sale securities | 0 | $ 0 |
Gross losses from sales of available for sale securities | 0 | $ 0 |
Investments in debt and marketable equity securities | $ 203,957 |  | $ 209,133
Temporarily impaired debt securities percentage of investment securities portfolio | 99.00% |  | 95.00%
Asset Pledged as Collateral with Right [Member] |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Carrying value of securities pledged as collateral | $ 129,833 |  | $ 125,209
Maturity Overnight [Member] |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Repurchase agreements | 9,700 |  |
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 | 9,487 |  | 9,488
Fair Value | 8,854 |  | 9,121
Investments in debt and marketable equity securities | 8,854 |  | 9,121
Mortgage-backed Securities - GSE Residential [Member] |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Mortgage-backed securities with a book value | 204,621 |  | 210,367
Fair Value | 175,427 |  | 188,185
Investments in debt and marketable equity securities | 175,427 |  | 181,629
Debt Securities [Member] |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Investments in debt and marketable equity securities | 203,957 |  | 209,133
Small Business Administration [Member] |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Mortgage-backed securities with a book value | 17,379 |  | 17,960
Fair Value | 15,233 |  | 16,442
Investments in debt and marketable equity securities | $ 15,233 |  | $ 14,983

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