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Bank Owned Life Insurance and MSRs - Additional Information (Details) - USD ($) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Dec. 31, 2024 | Sep. 30, 2024 | Jun. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Dec. 31, 2023
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |
Bank owned life insurance |  | $ 14,953,000 |  |  | $ 14,953,000 |  | $ 48,453,000 | [1]
Income tax expense (benefit) |  | 599,000 |  | $ (4,693,000) | (424,000) | $ (5,347,000) |  |
Mortgage servicing rights |  | 19,502,000 |  |  | 19,502,000 |  | 27,114,000 | [1]
Proceeds from surrender of bank owned life insurance policies |  | 34,300,000 |  |  | 34,297,000 | 0 |  |
Proceeds from sale of MSRs |  |  |  |  | 6,568,000 | 0 |  |
Loss on sale of MSRs |  |  |  |  | 1,011,000 | $ 0 |  |
Forecast [Member] |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |
Proceeds from surrender of bank owned life insurance policies | $ 14,000,000 |  |  |  |  |  |  |
Mortgage Servicing Rights Assets [Member] |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |
Mortgage servicing rights |  | 19,500,000 |  |  | 19,500,000 |  | 27,100,000 |
Aggregate unpaid principal balance |  | 438,600,000 |  |  |  |  |  |
Proceeds from sale of MSRs |  | 6,600,000 |  |  | 6,568,000 |  |  |
loss on sale of investment |  |  |  |  | 147,000 |  |  |
Loss on sale of MSRs |  | 1,000,000 |  |  |  |  |  |
Bank Owned Life Insurance [Member] |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |
Bank owned life insurance |  | $ 14,900,000 |  |  | 14,900,000 |  | $ 48,500,000 |
Surrender of these policies [Member] | Bank Owned Life Insurance [Member] |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |
Gain loss on investment |  |  |  |  | 0 |  |  |
Income tax expense (benefit) |  |  | $ 2,000,000 |  | $ 940,000 |  |  |
[1] | Derived from audited December 31, 2023 Consolidated Financial Statements.

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- Definition The carrying amount of a life insurance policy on an officer, executive or employee for which the reporting entity (a bank) is entitled to proceeds from the policy upon death of the insured or surrender of the insurance policy. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(10)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 + Details
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