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Loans and Allowance for Credit Losses - Classes of loans (Details) $ in Thousands | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2024 USD ($) loan | Jun. 30, 2024 USD ($) loan | Sep. 30, 2023 USD ($) | Jun. 30, 2023 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total loans (before deferred loan fees, net) | $ 3,966,736 | $ 3,850,035 |  |
Deferred loan fees, net | (218) | (232) |  |
Allowance for credit losses | (54,437) | (52,516) | $ (49,122) | $ (47,820)
Net loans | $ 3,912,081 | $ 3,797,287 |  |
Number of purchased participation loans | loan | 78 | 71 |  |
Purchased participation loans | $ 208,500 | $ 178,500 |  |
Commercial and industrial |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total loans (before deferred loan fees, net) | 457,018 | 450,147 |  |
Allowance for credit losses | (6,114) | (6,233) | (5,134) | (5,235)
Agriculture production |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total loans (before deferred loan fees, net) | 200,215 | 175,968 |  |
Allowance for credit losses | (784) | (835) | (697) | (782)
Consumer |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total loans (before deferred loan fees, net) | 58,735 | 59,671 |  |
Allowance for credit losses | (526) | (578) | (453) | (490)
All other loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total loans (before deferred loan fees, net) | 3,699 | 3,981 |  |
Allowance for credit losses | (14) | (17) | (16) | (21)
Secured by real estate |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total loans (before deferred loan fees, net) | 3,247,069 | 3,160,268 |  |
Secured by real estate | 1-4 residential real estate |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total loans (before deferred loan fees, net) | 942,916 | 925,397 |  |
Allowance for credit losses | (10,637) | (10,528) | (9,371) | (9,474)
Secured by real estate | Commercial Real Estate |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total loans (before deferred loan fees, net) | 1,600,000 |  |  |
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) | 903,678 | 899,770 |  |
Allowance for credit losses | (20,728) | (19,055) | (16,504) | (13,863)
Secured by real estate | Commercial Real Estate | Owner occupied |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total loans (before deferred loan fees, net) | 438,030 | 427,476 |  |
Allowance for credit losses | (4,814) | (4,815) | (4,879) | (5,168)
Secured by real estate | Multi-family real estate |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total loans (before deferred loan fees, net) | 371,177 | 384,564 |  |
Allowance for credit losses | (5,118) | (5,447) | (6,097) | (6,806)
Secured by real estate | Construction and land development |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total loans (before deferred loan fees, net) | 351,481 | 290,541 |  |
Allowance for credit losses | (3,675) | (2,901) | (3,545) | (3,414)
Secured by real estate | Agriculture real estate |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total loans (before deferred loan fees, net) | 239,787 | 232,520 |  |
Allowance for credit losses | $ (2,027) | $ (2,107) | $ (2,426) | $ (2,567)

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