Loans and Allowance for Loan Losses - Information on impaired loans (Details) - USD ($)	3 Months Ended	12 Months Ended
	Sep. 30, 2022	Jun. 30, 2022
Recorded Balance
Loans without a specific valuation allowance:	$ 215,793	$ 296,204
Total recorded balance	278,188	359,263
Unpaid Principal Balance
Loans without a specific valuation allowance:	215,793	296,204
Total unpaid principal balance	278,188	359,263
Specific Allowance	2,070	2,734
Average Balance of Impaired Loans
Loans without a specific valuation allowance:	216,488	301,041
Total average balance of impaired loans	279,200	365,360
Interest Income Recognized
Loans without a specific valuation allowance:	2,655	6,005
Total interest income recognized	3,700	10,033
Residential real estate
Recorded Balance
Loans with a specific valuation allowance:	62,395	63,059
Unpaid Principal Balance
Loans with a specific valuation allowance:	62,395	63,059
Specific Allowance	2,070	2,734
Average Balance of Impaired Loans
Loans with a specific valuation allowance:	62,712	64,319
Interest Income Recognized
Loans with a specific valuation allowance:	$ 1,045	$ 4,028