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Loans and Allowance for Credit Losses - Credit risk profile based on rating category and year of origination (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Jun. 30, 2025
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Financing Receivable, Credit Quality Indicator [Line Items] |  |
2026 / 2025 | $ 399,649 | $ 950,875
2025 / 2024 | 864,868 | 410,972
2024 / 2023 | 375,944 | 846,049
2023 / 2022 | 741,122 | 713,760
2022 / 2021 | 670,037 | 398,993
Prior | 623,719 | 284,349
Revolving loans | 516,404 | 495,770
Total | 4,191,743 | 4,100,768
Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2026 / 2025 | 389,542 | 935,212
2025 / 2024 | 846,821 | 390,289
2024 / 2023 | 356,719 | 819,478
2023 / 2022 | 717,331 | 677,255
2022 / 2021 | 631,523 | 394,266
Prior | 613,929 | 281,232
Revolving loans | 496,199 | 476,429
Total | 4,052,064 | 3,974,161
Watch |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2026 / 2025 | 9,431 | 14,799
2025 / 2024 | 11,594 | 10,810
2024 / 2023 | 10,836 | 20,407
2023 / 2022 | 20,333 | 7,719
2022 / 2021 | 8,200 | 4,570
Prior | 4,969 | 399
Revolving loans | 19,260 | 18,269
Total | 84,623 | 76,973
Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2026 / 2025 | 73 | 864
2025 / 2024 | 6,453 | 9,873
2024 / 2023 | 8,389 | 6,164
2023 / 2022 | 3,458 | 28,786
2022 / 2021 | 30,314 | 157
Prior | 4,821 | 2,718
Revolving loans | 945 | 1,072
Total | 54,453 | 49,634
Doubtful |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2026 / 2025 | 603 |
Total | 603 |
Construction and land development |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2026 / 2025 | 36,415 |
2025 / 2024 | 143,752 |
2024 / 2023 | 32,477 |
2023 / 2022 | 61,105 |
2022 / 2021 | 4,696 |
Prior | 3,416 |
Revolving loans | 2,051 |
Total | 283,912 |
Construction and land development | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2026 / 2025 | 36,415 |
2025 / 2024 | 143,752 |
2024 / 2023 | 26,734 |
2023 / 2022 | 60,914 |
2022 / 2021 | 4,696 |
Prior | 2,855 |
Revolving loans | 2,051 |
Total | 277,417 |
Construction and land development | Watch |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2023 / 2022 | 191 |
Prior | 61 |
Total | 252 |
Construction and land development | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2024 / 2023 | 5,743 |
Prior | 500 |
Total | 6,243 |
Agriculture real estate |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2026 / 2025 | 24,078 |
2025 / 2024 | 56,817 |
2024 / 2023 | 25,603 |
2023 / 2022 | 35,944 |
2022 / 2021 | 44,594 |
Prior | 49,066 |
Revolving loans | 19,508 |
Total | 255,610 |
Agriculture real estate | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2026 / 2025 | 19,175 |
2025 / 2024 | 52,788 |
2024 / 2023 | 22,666 |
2023 / 2022 | 33,605 |
2022 / 2021 | 37,830 |
Prior | 44,256 |
Revolving loans | 19,376 |
Total | 229,696 |
Agriculture real estate | Watch |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2026 / 2025 | 4,903 |
2025 / 2024 | 3,985 |
2024 / 2023 | 1,499 |
2023 / 2022 | 2,082 |
2022 / 2021 | 5,413 |
Prior | 4,043 |
Revolving loans | 132 |
Total | 22,057 |
Agriculture real estate | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2025 / 2024 | 44 |
2024 / 2023 | 1,438 |
2023 / 2022 | 257 |
2022 / 2021 | 1,351 |
Prior | 767 |
Total | 3,857 |
Commercial and industrial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2026 / 2025 | 89,516 | 174,453
2025 / 2024 | 133,690 | 42,997
2024 / 2023 | 34,469 | 39,077
2023 / 2022 | 21,285 | 32,542
2022 / 2021 | 29,490 | 17,221
Prior | 19,502 | 6,268
Revolving loans | 193,993 | 197,701
Total | 521,945 | 510,259
Commercial and industrial | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2026 / 2025 | 88,117 | 169,734
2025 / 2024 | 127,978 | 38,321
2024 / 2023 | 29,906 | 36,459
2023 / 2022 | 18,833 | 31,607
2022 / 2021 | 28,593 | 16,918
Prior | 18,958 | 6,016
Revolving loans | 188,196 | 192,310
Total | 500,581 | 491,365
Commercial and industrial | Watch |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2026 / 2025 | 723 | 3,966
2025 / 2024 | 2,922 | 4,565
2024 / 2023 | 4,496 | 2,453
2023 / 2022 | 2,277 |
2022 / 2021 |  | 250
Prior | 212 | 13
Revolving loans | 5,159 | 4,437
Total | 15,789 | 15,684
Commercial and industrial | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2026 / 2025 | 73 | 753
2025 / 2024 | 2,790 | 111
2024 / 2023 | 67 | 165
2023 / 2022 | 175 | 935
2022 / 2021 | 897 | 53
Prior | 332 | 239
Revolving loans | 638 | 954
Total | 4,972 | 3,210
Commercial and industrial | Doubtful |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2026 / 2025 | 603 |
Total | 603 |
Agriculture production |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2026 / 2025 | 13,020 | 46,791
2025 / 2024 | 46,700 | 14,245
2024 / 2023 | 12,691 | 5,712
2023 / 2022 | 5,154 | 2,001
2022 / 2021 | 1,802 | 4,363
Prior | 3,938 | 314
Revolving loans | 146,033 | 132,702
Total | 229,338 | 206,128
Agriculture production | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2026 / 2025 | 9,339 | 43,446
2025 / 2024 | 45,157 | 13,230
2024 / 2023 | 11,771 | 5,631
2023 / 2022 | 5,073 | 1,910
2022 / 2021 | 1,711 | 4,363
Prior | 3,927 | 302
Revolving loans | 132,475 | 119,345
Total | 209,453 | 188,227
Agriculture production | Watch |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2026 / 2025 | 3,681 | 3,319
2025 / 2024 | 1,517 | 888
2024 / 2023 | 871 |
2023 / 2022 |  | 83
2022 / 2021 | 83 |
Revolving loans | 13,558 | 13,357
Total | 19,710 | 17,647
Agriculture production | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2026 / 2025 |  | 26
2025 / 2024 | 26 | 127
2024 / 2023 | 49 | 81
2023 / 2022 | 81 | 8
2022 / 2021 | 8 |
Prior | 11 | 12
Total | 175 | 254
Consumer |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2026 / 2025 | 9,800 | 29,962
2025 / 2024 | 24,426 | 11,284
2024 / 2023 | 9,402 | 8,342
2023 / 2022 | 6,879 | 3,206
2022 / 2021 | 2,558 | 938
Prior | 1,512 | 172
Revolving loans | 1,474 | 1,483
Total | 56,051 | 55,387
Consumer | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2026 / 2025 | 9,800 | 29,912
2025 / 2024 | 24,393 | 11,264
2024 / 2023 | 9,402 | 8,330
2023 / 2022 | 6,866 | 3,189
2022 / 2021 | 2,558 | 938
Prior | 1,512 | 172
Revolving loans | 1,474 | 1,483
Total | 56,005 | 55,288
Consumer | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2026 / 2025 |  | 50
2025 / 2024 | 33 | 20
2024 / 2023 |  | 12
2023 / 2022 | 13 | 17
Total | 46 | 99
All other loans |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2026 / 2025 | 259 | 2,334
2025 / 2024 | 2,379 | 869
2024 / 2023 | 856 | 245
2023 / 2022 | 183 | 82
2022 / 2021 | 41 | 132
Prior | 1,376 | 1,440
Total | 5,094 | 5,102
All other loans | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2026 / 2025 | 259 | 2,334
2025 / 2024 | 2,379 | 869
2024 / 2023 | 856 | 245
2023 / 2022 | 183 | 82
2022 / 2021 | 41 | 132
Prior | 1,376 | 1,440
Total | 5,094 | 5,102
Secured by real estate | 1-4 Family residential real estate |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2026 / 2025 | 74,065 | 204,668
2025 / 2024 | 184,936 | 111,818
2024 / 2023 | 103,764 | 134,182
2023 / 2022 | 129,696 | 168,417
2022 / 2021 | 163,425 | 127,161
Prior | 248,652 | 133,735
Revolving loans | 116,762 | 112,464
Total | 1,021,300 | 992,445
Secured by real estate | 1-4 Family residential real estate | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2026 / 2025 | 74,065 | 204,048
2025 / 2024 | 184,390 | 110,823
2024 / 2023 | 103,355 | 133,616
2023 / 2022 | 128,831 | 167,711
2022 / 2021 | 162,207 | 126,851
Prior | 245,297 | 132,126
Revolving loans | 116,461 | 112,346
Total | 1,014,606 | 987,521
Secured by real estate | 1-4 Family residential real estate | Watch |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2026 / 2025 |  | 620
2025 / 2024 | 546 | 261
2024 / 2023 | 167 | 376
2023 / 2022 | 499 | 360
2022 / 2021 | 335 | 277
Prior | 581 | 250
Revolving loans | 11 |
Total | 2,139 | 2,144
Secured by real estate | 1-4 Family residential real estate | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2025 / 2024 |  | 734
2024 / 2023 | 242 | 190
2023 / 2022 | 366 | 346
2022 / 2021 | 883 | 33
Prior | 2,774 | 1,359
Revolving loans | 290 | 118
Total | 4,555 | 2,780
Secured by real estate | Commercial Real Estate | Non-owner occupied |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2026 / 2025 | 93,393 | 115,266
2025 / 2024 | 124,315 | 84,817
2024 / 2023 | 75,948 | 233,283
2023 / 2022 | 208,242 | 299,990
2022 / 2021 | 280,894 | 76,522
Prior | 127,253 | 70,869
Revolving loans | 8,230 | 7,570
Total | 918,275 | 888,317
Secured by real estate | Commercial Real Estate | Non-owner occupied | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2026 / 2025 | 93,393 | 115,266
2025 / 2024 | 120,755 | 82,983
2024 / 2023 | 74,178 | 213,647
2023 / 2022 | 191,548 | 273,348
2022 / 2021 | 254,409 | 76,522
Prior | 127,253 | 70,869
Revolving loans | 8,230 | 7,570
Total | 869,766 | 840,205
Secured by real estate | Commercial Real Estate | Non-owner occupied | Watch |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2025 / 2024 |  | 1,770
2024 / 2023 | 1,770 | 15,146
2023 / 2022 | 14,998 | 213
2022 / 2021 | 196 |
Total | 16,964 | 17,129
Secured by real estate | Commercial Real Estate | Non-owner occupied | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2025 / 2024 | 3,560 | 64
2024 / 2023 |  | 4,490
2023 / 2022 | 1,696 | 26,429
2022 / 2021 | 26,289 |
Total | 31,545 | 30,983
Secured by real estate | Commercial Real Estate | Owner occupied |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2026 / 2025 | 48,143 | 73,909
2025 / 2024 | 66,690 | 60,149
2024 / 2023 | 62,594 | 89,155
2023 / 2022 | 80,756 | 80,930
2022 / 2021 | 72,507 | 73,362
Prior | 102,393 | 44,273
Revolving loans | 21,182 | 21,206
Total | 454,265 | 442,984
Secured by real estate | Commercial Real Estate | Owner occupied | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2026 / 2025 | 48,019 | 72,469
2025 / 2024 | 65,628 | 57,047
2024 / 2023 | 59,711 | 87,899
2023 / 2022 | 79,600 | 79,946
2022 / 2021 | 70,811 | 73,291
Prior | 101,884 | 43,764
Revolving loans | 20,765 | 21,206
Total | 446,418 | 435,622
Secured by real estate | Commercial Real Estate | Owner occupied | Watch |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2026 / 2025 | 124 | 1,440
2025 / 2024 | 1,062 | 2,234
2024 / 2023 | 2,033 | 287
2023 / 2022 | 286 | 83
2022 / 2021 | 810 |
Prior | 72 | 73
Revolving loans | 400 |
Total | 4,787 | 4,117
Secured by real estate | Commercial Real Estate | Owner occupied | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2025 / 2024 |  | 868
2024 / 2023 | 850 | 969
2023 / 2022 | 870 | 901
2022 / 2021 | 886 | 71
Prior | 437 | 436
Revolving loans | 17 |
Total | 3,060 | 3,245
Secured by real estate | Multi-family real estate |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2026 / 2025 | 10,960 | 81,229
2025 / 2024 | 81,163 | 19,078
2024 / 2023 | 18,140 | 179,905
2023 / 2022 | 191,878 | 71,239
2022 / 2021 | 70,030 | 56,328
Prior | 66,611 | 13,577
Revolving loans | 7,171 | 1,402
Total | 445,953 | 422,758
Secured by real estate | Multi-family real estate | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2026 / 2025 | 10,960 | 79,658
2025 / 2024 | 79,601 | 19,078
2024 / 2023 | 18,140 | 179,905
2023 / 2022 | 191,878 | 69,862
2022 / 2021 | 68,667 | 56,328
Prior | 66,611 | 13,577
Revolving loans | 7,171 | 1,402
Total | 443,028 | 419,810
Secured by real estate | Multi-family real estate | Watch |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2026 / 2025 |  | 1,571
2025 / 2024 | 1,562 |
2023 / 2022 |  | 1,377
2022 / 2021 | 1,363 |
Total | 2,925 | 2,948
Secured by real estate | Construction and land development |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2026 / 2025 |  | 161,995
2025 / 2024 |  | 37,891
2024 / 2023 |  | 117,395
2023 / 2022 |  | 9,144
2022 / 2021 |  | 1,829
Prior |  | 2,131
Revolving loans |  | 2,020
Total | 283,912 | 332,405
Secured by real estate | Construction and land development | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2026 / 2025 |  | 161,995
2025 / 2024 |  | 32,148
2024 / 2023 |  | 117,395
2023 / 2022 |  | 9,144
2022 / 2021 |  | 1,829
Prior |  | 1,396
Revolving loans |  | 2,020
Total |  | 325,927
Secured by real estate | Construction and land development | Watch |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Prior |  | 63
Total |  | 63
Secured by real estate | Construction and land development | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2025 / 2024 |  | 5,743
Prior |  | 672
Total |  | 6,415
Secured by real estate | Agriculture real estate |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2026 / 2025 |  | 60,268
2025 / 2024 |  | 27,824
2024 / 2023 |  | 38,753
2023 / 2022 |  | 46,209
2022 / 2021 |  | 41,137
Prior |  | 11,570
Revolving loans |  | 19,222
Total | $ 255,610 | 244,983
Secured by real estate | Agriculture real estate | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2026 / 2025 |  | 56,350
2025 / 2024 |  | 24,526
2024 / 2023 |  | 36,351
2023 / 2022 |  | 40,456
2022 / 2021 |  | 37,094
Prior |  | 11,570
Revolving loans |  | 18,747
Total |  | 225,094
Secured by real estate | Agriculture real estate | Watch |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2026 / 2025 |  | 3,883
2025 / 2024 |  | 1,092
2024 / 2023 |  | 2,145
2023 / 2022 |  | 5,603
2022 / 2021 |  | 4,043
Revolving loans |  | 475
Total |  | 17,241
Secured by real estate | Agriculture real estate | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2026 / 2025 |  | 35
2025 / 2024 |  | 2,206
2024 / 2023 |  | 257
2023 / 2022 |  | 150
Total |  | $ 2,648

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