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Loans and Allowance for Credit Losses - Classes of loans information (Details) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Jun. 30, 2022 USD ($)
Provision for credit losses, credit (charges) | $ 1,100,000 | $ 0 | $ 6,200,000 | $ 305,000 |
Residential Real Estate. |  |  |  |  |
Fixed-rate and adjustable-rate mortgage (ARM) loans amortization period (in years) |  |  | 30 years |  |
Residential Real Estate. | Single Family |  |  |  |  |
Maximum percentage of appraised value or purchase price that loans cannot exceed |  |  | 90.00% |  |
Residential Real Estate. | Multifamily |  |  |  |  |
Amortization period of loans |  |  | 25 years |  |
Amortization period of multi-family residential loans if balloon maturities |  |  | 10 years |  |
Commercial |  |  |  |  |
Amortization period of loans |  |  | 25 years |  |
Term of fixed interest applicability on loans |  |  | 10 years |  |
Term of variable interest applicability on loans |  |  | 7 years |  |
Agricultural real estate terms if 80% loan-to-value ratio |  |  | 25 years |  |
Agricultural real estate terms if 75% loan-to-value ratio |  |  | 30 years |  |
Residential Real Estate |  |  |  |  |
Amortization period of loans |  |  | 30 years |  |
Residential Real Estate | Minimum |  |  |  |  |
Maturities of single-family residential construction loans |  |  | 6 months |  |
Residential Real Estate | Maximum |  |  |  |  |
Maturities of single-family residential construction loans |  |  | 12 months |  |
Commercial Real Estate |  |  |  |  |
Amortization period of loans |  |  | 25 years |  |
Construction Real Estate |  |  |  |  |
Average term of construction loans |  |  | 12 months |  |
Construction Real Estate | Minimum |  |  |  |  |
Maturities of multifamily or commercial construction loans |  |  | 12 months |  |
Construction Real Estate | Maximum |  |  |  |  |
Maturities of multifamily or commercial construction loans |  |  | 36 months |  |
Consumer loans |  |  |  |  |
Amortization period of loans |  |  | 66 months |  |
Consumer loans | Home Equity Loan |  |  |  |  |
Maximum percentage of appraised value or purchase price that loans cannot exceed |  |  | 100.00% |  |
Amortization period of loans |  |  | 10 years |  |
Consumer loans | Automobile loans |  |  |  |  |
Maximum percentage of appraised value or purchase price that loans cannot exceed |  |  | 100.00% |  |
Amortization period of loans |  |  | 66 months |  |
Commercial loans |  |  |  |  |
Amortization period of loans |  |  | 5 years |  |
Amortization period of multi-family residential loans if balloon maturities |  |  | 1 year |  |
Modifications for the purpose of extending the maturity date | Construction Real Estate |  |  |  |  |
Incremental period that the loan maturity can be extended to |  |  | 3 months |  |
Number of construction loans outstanding, for which a modification had been agreed to | 58 |  | 58 |  | 57
Construction loans outstanding, for which a modification had been agreed to | $ 35,500,000 |  | $ 35,500,000 |  | $ 13,800,000

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