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Financial Derivative Instruments (Details)	3 Months Ended
	Dec. 31, 2021 USD ($) derivative	Sep. 30, 2022 USD ($) derivative	Sep. 30, 2021 USD ($) derivative
Interest rate swap agreements
Derivative [Line Items]
Derivative, gain on derivative	$ 336,000
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap August 2 2024
Derivative [Line Items]
Fixed Rate Paid		1.59%
Notional Amount	0	$ 0	$ 12,500,000
Fair Value	0	$ 0	(381,000)
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap August 5 2024
Derivative [Line Items]
Fixed Rate Paid		1.42%
Notional Amount	0	$ 0	12,500,000
Fair Value	0	$ 0	(320,000)
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap February 12 2023
Derivative [Line Items]
Fixed Rate Paid		1.486%
Notional Amount	0	$ 0	25,000,000
Fair Value	0	$ 0	(438,000)
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap February 12 2024
Derivative [Line Items]
Fixed Rate Paid		1.477%
Notional Amount	0	$ 0	25,000,000
Fair Value	0	$ 0	(601,000)
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap June 28 2026
Derivative [Line Items]
Fixed Rate Paid		1.158%
Notional Amount	0	$ 0	50,000,000
Fair Value	0	$ 0	(594,000)
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap March 13 2025
Derivative [Line Items]
Fixed Rate Paid		0.855%
Notional Amount	0	$ 0	25,000,000
Fair Value	0	$ 0	(85,000)
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap March 13 2030
Derivative [Line Items]
Fixed Rate Paid		1.029%
Notional Amount	0	$ 0	20,000,000
Fair Value	0	$ 0	644,000
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap April 07 2023
Derivative [Line Items]
Fixed Rate Paid		0.599%
Notional Amount	0	$ 0	20,000,000
Fair Value	0	$ 0	(106,000)
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap April 07 2024
Derivative [Line Items]
Fixed Rate Paid		0.643%
Notional Amount	0	$ 0	20,000,000
Fair Value	0	$ 0	(64,000)
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap October 27 2023
Derivative [Line Items]
Fixed Rate Paid		2.498%
Notional Amount	0	$ 10,000,000	0
Fair Value	0	$ 179,000	0
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap January 27 2024
Derivative [Line Items]
Fixed Rate Paid		2.576%
Notional Amount	0	$ 10,000,000	0
Fair Value	0	$ 212,000	0
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap April 27 2024
Derivative [Line Items]
Fixed Rate Paid		2.619%
Notional Amount	0	$ 10,000,000	0
Fair Value	0	242,000	0
Cash Flow Hedging | Designated as Hedging Instrument | Interest rate swap agreements
Derivative [Line Items]
Fair Value	0	633,000	(1,945,000)
Derivative notional amount	0	$ 30,000,000	210,000,000
Cash Flow Hedging | Designated as Hedging Instrument | Customer Loan Swaps Maturity Dates December 19, 2029, August 21, 2030, April 1, 2031, July 1, 2035, October 1, 2035 and October 1, 2039
Derivative [Line Items]
Number of derivative instruments | derivative		6
Cash Flow Hedging | Not Designated as Hedging Instrument | Customer loan interest swap agreements
Derivative [Line Items]
Fair Value	0	$ 0	0
Derivative notional amount	$ 80,738,000	$ 77,256,000	$ 81,306,000
Number of derivative instruments | derivative	12	12	12
Cash Flow Hedging | Not Designated as Hedging Instrument | Customer loan interest swap agreements | Pay Fixed, Receive Variable
Derivative [Line Items]
Fair Value	$ (1,013,000)	$ 5,365,000	$ (1,061,000)
Derivative notional amount	$ 40,369,000	$ 38,628,000	$ 40,653,000
Number of derivative instruments | derivative	6	6	6
Cash Flow Hedging | Not Designated as Hedging Instrument | Customer loan interest swap agreements | Receive Fixed, Pay Variable
Derivative [Line Items]
Fair Value	$ 1,013,000	$ (5,365,000)	$ 1,061,000
Derivative notional amount	$ 40,369,000	$ 38,628,000	$ 40,653,000
Number of derivative instruments | derivative	6	6	6
Cash Flow Hedging | Not Designated as Hedging Instrument | Other Assets | Customer loan interest swap agreements | Pay Fixed, Receive Variable
Derivative [Line Items]
Fair Value	$ 789,000	$ 5,365,000	$ 801,000
Derivative notional amount	$ 15,765,000	$ 38,628,000	$ 15,885,000
Number of derivative instruments | derivative	3	6	3
Cash Flow Hedging | Not Designated as Hedging Instrument | Other Assets | Customer loan interest swap agreements | Receive Fixed, Pay Variable
Derivative [Line Items]
Fair Value	$ 1,802,000	$ 0	$ 1,862,000
Derivative notional amount	$ 24,604,000	$ 0	$ 24,768,000
Number of derivative instruments | derivative	3	0	3
Cash Flow Hedging | Not Designated as Hedging Instrument | Other Liabilities | Customer loan interest swap agreements | Pay Fixed, Receive Variable
Derivative [Line Items]
Fair Value	$ (1,802,000)	$ 0	$ (1,862,000)
Derivative notional amount	$ 24,604,000	$ 0	$ 24,768,000
Number of derivative instruments | derivative	3	0	3
Cash Flow Hedging | Not Designated as Hedging Instrument | Other Liabilities | Customer loan interest swap agreements | Receive Fixed, Pay Variable
Derivative [Line Items]
Fair Value	$ (789,000)	$ (5,365,000)	$ (801,000)
Derivative notional amount	$ 15,765,000	$ 38,628,000	$ 15,885,000
Number of derivative instruments | derivative	3	6	3

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Nominal or face amount used to calculate payments on the derivative asset.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
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