Revenue from Contract with Customer (Details) - USD ($)	3 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Deposit Account
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	$ 947,000	$ 913,000
Credit and Debit Card
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	1,251,000	1,277,000
Asset Management
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	30,000	78,000
Investment Advice
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	$ 30,000	$ 2,000