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Loans and Allowance for Credit Losses - Loan portfolio aging analysis (Details) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2024 USD ($) loan | Jun. 30, 2024 USD ($) loan
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | $ 3,966,736,000 | $ 3,850,035,000
Number of PCD loans greater than 90 days past due | loan | 3 | 1
Purchased credit-impaired loans | $ 558,000 | $ 560,000
Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 13,350,000 | 9,201,000
30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 3,425,000 | 3,128,000
60 to 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 3,611,000 | 2,621,000
Greater than 90 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 6,314,000 | 3,452,000
Current |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 3,953,386,000 | 3,840,834,000
Construction and land development |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 351,481,000 |
Agriculture real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 239,787,000 |
Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 457,018,000 | 450,147,000
Commercial and industrial | Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 2,509,000 | 2,059,000
Commercial and industrial | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 1,042,000 | 641,000
Commercial and industrial | 60 to 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 210,000 | 83,000
Commercial and industrial | Greater than 90 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 1,257,000 | 1,335,000
Commercial and industrial | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 454,509,000 | 448,088,000
Agriculture production |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 200,215,000 | 175,968,000
Agriculture production | Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 92,000 | 394,000
Agriculture production | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable |  | 50,000
Agriculture production | 60 to 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 66,000 |
Agriculture production | Greater than 90 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 26,000 | 344,000
Agriculture production | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 200,123,000 | 175,574,000
Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 58,735,000 | 59,671,000
Consumer | Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 489,000 | 399,000
Consumer | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 251,000 | 311,000
Consumer | 60 to 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 139,000 | 74,000
Consumer | Greater than 90 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 99,000 | 14,000
Consumer | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 58,246,000 | 59,272,000
All other loans |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 3,699,000 | 3,981,000
All other loans | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 3,699,000 | 3,981,000
Secured by real estate | 1-4 residential real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 942,916,000 | 925,397,000
Secured by real estate | 1-4 residential real estate | Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 6,597,000 | 3,641,000
Secured by real estate | 1-4 residential real estate | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 1,688,000 | 890,000
Secured by real estate | 1-4 residential real estate | 60 to 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 3,196,000 | 2,087,000
Secured by real estate | 1-4 residential real estate | Greater than 90 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 1,713,000 | 664,000
Secured by real estate | 1-4 residential real estate | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 936,319,000 | 921,756,000
Secured by real estate | Commercial Real Estate | Non-owner occupied |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 903,678,000 | 899,770,000
Secured by real estate | Commercial Real Estate | Non-owner occupied | Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 106,000 | 107,000
Secured by real estate | Commercial Real Estate | Non-owner occupied | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 106,000 | 107,000
Secured by real estate | Commercial Real Estate | Non-owner occupied | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 903,572,000 | 899,663,000
Secured by real estate | Commercial Real Estate | Owner occupied |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 438,030,000 | 427,476,000
Secured by real estate | Commercial Real Estate | Owner occupied | Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 1,308,000 | 1,365,000
Secured by real estate | Commercial Real Estate | Owner occupied | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 135,000 | 305,000
Secured by real estate | Commercial Real Estate | Owner occupied | Greater than 90 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 1,173,000 | 1,060,000
Secured by real estate | Commercial Real Estate | Owner occupied | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 436,722,000 | 426,111,000
Secured by real estate | Multi-family real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 371,177,000 | 384,564,000
Secured by real estate | Multi-family real estate | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 371,177,000 | 384,564,000
Secured by real estate | Construction and land development |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 351,481,000 | 290,541,000
Secured by real estate | Construction and land development | Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 363,000 | 628,000
Secured by real estate | Construction and land development | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 176,000 | 251,000
Secured by real estate | Construction and land development | 60 to 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable |  | 377,000
Secured by real estate | Construction and land development | Greater than 90 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 187,000 |
Secured by real estate | Construction and land development | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 351,118,000 | 289,913,000
Secured by real estate | Agriculture real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 239,787,000 | 232,520,000
Secured by real estate | Agriculture real estate | Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 1,886,000 | 608,000
Secured by real estate | Agriculture real estate | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 27,000 | 573,000
Secured by real estate | Agriculture real estate | Greater than 90 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | 1,859,000 | 35,000
Secured by real estate | Agriculture real estate | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans Receivable | $ 237,901,000 | $ 231,912,000

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