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Loans and Allowance for Credit Losses - Risk characteristics applicable to each class of the loan portfolio (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Jun. 30, 2025
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans (before deferred loan fees, net) | $ 4,191,743 |  | $ 4,100,768
Allowance for credit losses, loans | 4,141 | $ 2,021 |
Provision (recovery) for off balance sheet credit exposure | 359 | 138 |
Allowance for credit loss of individually evaluated loans | 6,300 |  | 8,200
Allowance for credit loss of Non-individually evaluated loans | $ 45,800 |  | 43,400
1-4 Family residential real estate | Owner occupied | Maximum |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amortization period of loans | 25 years |  |
Commercial Real Estate | Maximum |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Maximum percentage of appraised value or purchase price that loans cannot exceed | 80.00% |  |
Amortization period of loans | 25 years |  |
Term of fixed interest applicability on loans | 10 years |  |
Term of variable interest applicability on loans | 7 years |  |
Multi-family real estate | Minimum |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Maturities of multifamily or commercial construction loans | 12 months |  |
Multi-family real estate | Maximum |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Maximum percentage of appraised value or purchase price that loans cannot exceed | 85.00% |  |
Amortization period of loans | 25 years |  |
Amortization term of ballon maturity | 10 years |  |
Maturities of multifamily or commercial construction loans | 36 months |  |
Construction and land development | Minimum |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Maturities of single-family residential construction loans | 6 months |  |
Construction and land development | Maximum |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amortization period of loans | 30 years |  |
Commercial and industrial |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amortization period of loans | 5 years |  |
Total loans (before deferred loan fees, net) | $ 521,945 |  | 510,259
Allowance for credit losses, loans | 1,190 | (85) |
Provision (recovery) for off balance sheet credit exposure | (270) | 20 |
Agriculture production |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans (before deferred loan fees, net) | 229,338 |  | 206,128
Allowance for credit losses, loans | $ 221 | (51) |
Provision (recovery) for off balance sheet credit exposure |  | (3) |
Consumer |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amortization period of loans | 66 months |  |
Total loans (before deferred loan fees, net) | $ 56,051 |  | 55,387
Allowance for credit losses, loans | 399 | 13 |
Provision (recovery) for off balance sheet credit exposure | $ 3 |  |
Consumer | Automobile loans |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Maximum percentage of appraised value or purchase price that loans cannot exceed | 100.00% |  |
Amortization period of loans | 66 months |  |
All other loans |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans (before deferred loan fees, net) | $ 5,094 |  | 5,102
Allowance for credit losses, loans | (2) | (3) |
Secured by real estate |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans (before deferred loan fees, net) | $ 3,379,315 |  | 3,323,892
Secured by real estate | 1-4 Family residential real estate |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Maximum percentage of appraised value or purchase price that loans cannot exceed | 90.00% |  |
Total loans (before deferred loan fees, net) | $ 1,021,300 |  | 992,445
Allowance for credit losses, loans | 1,310 | 157 |
Provision (recovery) for off balance sheet credit exposure | $ (20) | 30 |
Secured by real estate | 1-4 Family residential real estate | Home Equity Loan |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Percentage of appraised value or estimated value of property | 90.00% |  |
Term of loan | 10 years |  |
Secured by real estate | 1-4 Family residential real estate | Maximum |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Fixed-rate and adjustable-rate mortgage (ARM) loans amortization period (in years) | 30 years |  |
Secured by real estate | Commercial Real Estate | Non-owner occupied |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans (before deferred loan fees, net) | $ 918,275 |  | 888,317
Allowance for credit losses, loans | 1,148 | 1,673 |
Provision (recovery) for off balance sheet credit exposure | 26 | 22 |
Secured by real estate | Commercial Real Estate | Owner occupied |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans (before deferred loan fees, net) | 454,265 |  | 442,984
Allowance for credit losses, loans | (189) | (1) |
Provision (recovery) for off balance sheet credit exposure | (28) | (14) |
Secured by real estate | Multi-family real estate |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans (before deferred loan fees, net) | 445,953 |  | 422,758
Allowance for credit losses, loans | (350) | (376) |
Provision (recovery) for off balance sheet credit exposure | 63 | 3 |
Secured by real estate | Construction and land development |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans (before deferred loan fees, net) | $ 283,912 |  | 332,405
Incremental period that the loan maturity can be extended to | 3 months |  |
Allowance for credit losses, loans | $ (154) | 774 |
Provision (recovery) for off balance sheet credit exposure | $ 575 | 88 |
Secured by real estate | Construction and land development | Maximum |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Maturities of single-family residential construction loans | 12 months |  |
Secured by real estate | Agriculture real estate |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amortization period of loans | 1 year |  |
Total loans (before deferred loan fees, net) | $ 255,610 |  | $ 244,983
Agricultural real estate terms if 75% loan-to-value ratio | 30 years |  |
Allowance for credit losses, loans | $ 568 | (80) |
Provision (recovery) for off balance sheet credit exposure | $ 10 | $ (8) |
Secured by real estate | Agriculture real estate | Scenario one |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loan to value percentage | 80.00% |  |
Secured by real estate | Agriculture real estate | Scenario two |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loan to value percentage | 75.00% |  |
Secured by real estate | Agriculture real estate | Maximum |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Agricultural real estate terms if 80% loan-to-value ratio | 25 years |  |

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