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Fair Value Measurements Fair Value Measurement, Measured On Non-Recurring Basis, Signfiicant Unobservable Inputs, Quantitative Information (Details) - Fair Value, Nonrecurring [Member] - Nonaccruing Loans [Member] - Fair Value, Inputs, Level 3 [Member] - USD ($) $ in Thousands | Sep. 30, 2024 | Sep. 30, 2023
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Discounted Cash Flow [Member] | Management knowledge of industry and non-real estate collateral |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Assets, Fair Value Disclosure | $ 5,100 |  | $ 796 |
Minimum [Member] |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Fair Value of Impaired Loans as Percentage of Unpaid Principal Balance | 36.00% | [1] | 12.00% | [2]
Maximum [Member] |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Fair Value of Impaired Loans as Percentage of Unpaid Principal Balance | 36.00% | [1] | 14.00% | [2]
Weighted Average [Member] |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Fair Value of Impaired Loans as Percentage of Unpaid Principal Balance | 36.00% | [1] | 14.00% | [2]
[1] | Represents fair value as a percentage of the unpaid principal balance.
[2] | Represents fair value as a percentage of the unpaid principal balance.

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