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Business Combination - Additional Information (Details) - USD ($) |  | 3 Months Ended
--- | --- | ---
Sep. 19, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Business Acquisition [Line Items] |  |  |
Goodwill | $ 20,417,000 |  |
Other professional services |  | $ 489,000 | $ 854,000
Charitable contribution expense |  |  | 4,528,000
Provision for estimated credit losses |  | $ (154,000) | 4,162,000
Regal Bancorp Inc |  |  |
Business Acquisition [Line Items] |  |  |
Date of acquisition |  | Sep. 19, 2023 |
Common stock converted into the right to receive in cash | $ 23 |  |
Goodwill | $ 20,400,000 | $ 20,400,000 |
One-time Merger Related Expenses |  |  | 3,900,000
Change in control payments |  |  | 2,600,000
Investment banking services |  |  | 612,000
Termination of data processing contract |  |  | 414,000
Legal related expenses |  |  | 99,000
Severance payments |  |  | 42,000
Other professional services |  |  | 17,000
Other miscellaneous expenses |  |  | 30,000
Charitable contribution expense |  |  | 5,400,000
Provision for estimated credit losses |  |  | $ 4,200,000
Regal Bancorp Inc | Core Deposit Intangibles |  |  |
Business Acquisition [Line Items] |  |  |
Intangible asset acquired | $ 9,100,000 |  |
Estimated useful life | 10 years | 10 years |

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