Interest Rate Derivatives - Schedule of Hedge transcations increased the net income - Details (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Sep. 30, 2023
Average Notional Balance \| Fair Value Hedging
Derivative [Line Items]
Investments	$ 80,779	$ 53,756
Loans	135,816	83,701
Fair Value Hedges, Net, Total	216,595	137,457
Average Notional Balance \| Cash Flow Hedging
Derivative [Line Items]
Borrowed Funds	15,852	47,778
Period Ending Notional Balance \| Fair Value Hedging
Derivative [Line Items]
Investments	73,061	52,120
Loans	131,769	110,149
Fair Value Hedges, Net, Total	204,830	162,269
Period Ending Notional Balance \| Cash Flow Hedging
Derivative [Line Items]
Borrowed Funds	0	40,000
Net Cash Received Recorded In Net \| Fair Value Hedging
Derivative [Line Items]
Investments	1,771	1,513
Loans	1,951	1,540
Fair Value Hedges, Net, Total	3,722	3,053
Net Cash Received Recorded In Net \| Cash Flow Hedging
Derivative [Line Items]
Borrowed Funds	157	748
Fair Value Receivable (Payable) at Quarter End \| Fair Value Hedging
Derivative [Line Items]
Investments	1,059	6,709
Loans	(875)	5,807
Fair Value Hedges, Net, Total	184	12,516
Fair Value Receivable (Payable) at Quarter End \| Cash Flow Hedging
Derivative [Line Items]
Borrowed Funds	$ 0	$ 909

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Net fair value of all derivative instruments designated as cash flow hedging instruments, which is ordinarily reflected within other comprehensive income.

+ References

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-Name Accounting Standards Codification
-Section 45
-Paragraph 5
-SubTopic 10
-Topic 815
-Publisher FASB
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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-Topic 815
-SubTopic 40
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Fair value of all derivative assets designated as fair value hedging instruments.

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