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Loans and Allowance for Credit Losses - Classes of loans information (Details) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2020 USD ($) item | Dec. 31, 2019 USD ($) | Jun. 30, 2020 USD ($)
Provision for credit losses | $ | $ 612 | $ 388 | $ 1,385 | $ 1,284 |
ACL | $ | $ 35,471 |  | $ 35,471 |  | $ 25,139
Consumer Loan |  |  |  |  |
Amortization period of loans |  |  | 5 years |  |
Consumer Loans, Home Equity Lines Of Credit |  |  |  |  |
Maximum percentage of appraised value or purchase price that loans cannot exceed |  |  | 100.00% |  |
Amortization period of loans |  |  | 10 years |  |
Consumer Loans, Other Than Home Equity Lines Of Credit |  |  |  |  |
Maximum percentage of appraised value or purchase price that loans cannot exceed |  |  | 100.00% |  |
Amortization period of loans |  |  | 60 months |  |
Commercial Loan |  |  |  |  |
Amortization period of loans |  |  | 5 years |  |
Amortization period for commercial operating lines of credit or agricultural production lines |  |  | 1 year |  |
Construction Real Estate | Minimum |  |  |  |  |
Maturities of single-family residential construction loans |  |  | 6 months |  |
Maturities of multifamily or commercial construction loans |  |  | 12 months |  |
Construction Real Estate | Maximum |  |  |  |  |
Maturities of single-family residential construction loans |  |  | 12 months |  |
Maturities of multifamily or commercial construction loans |  |  | 24 months |  |
Residential real estate loans |  |  |  |  |
Fixed-rate and adjustable-rate mortgage (ARM) loans amortization period (in years) |  |  | 30 years |  |
Amortization period of multi-family residential loans if balloon maturities |  |  | 10 years |  |
Residential real estate loans | Minimum |  |  |  |  |
Number of family residences | item |  |  | 1 |  |
Residential real estate loans | Maximum |  |  |  |  |
Number of family residences | item |  |  | 4 |  |
Residential real estate loans | Construction Real Estate |  |  |  |  |
Amortization period of loans |  |  | 30 years |  |
Residential real estate loans | Single Family [Member] |  |  |  |  |
Maximum percentage of appraised value or purchase price that loans cannot exceed |  |  | 90.00% |  |
Residential real estate loans | Multifamily [Member] |  |  |  |  |
Maximum percentage of appraised value or purchase price that loans cannot exceed |  |  | 85.00% |  |
Amortization period of loans |  |  | 25 years |  |
Commercial Real Estate |  |  |  |  |
Maximum percentage of appraised value or purchase price that loans cannot exceed |  |  | 80.00% |  |
Amortization period of loans |  |  | 25 years |  |
Term of fixed interest applicabality 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 |  |
Commercial Real Estate | Construction Real Estate |  |  |  |  |
Amortization period of loans |  |  | 25 years |  |

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