Loans and Allowance for Credit Losses - Credit risk profile based on rating category and year of origination (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2024	Jun. 30, 2024
Financing Receivable, Credit Quality Indicator [Line Items]
Amount of loan relationships subject to annual credit analysis	$ 3,000
Loan relationships that are subject to independent annual review	1,000
2025 / 2024	258,470	$ 737,190
2024 / 2023	648,682	953,922
2023 / 2022	946,218	833,645
2022 / 2021	807,783	518,406
2021 / 2020	497,089	171,485
Prior	357,855	200,743
Revolving loans	450,639	434,644
Total	3,966,736	3,850,035
Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2025 / 2024	244,732	720,679
2024 / 2023	638,504	926,158
2023 / 2022	924,352	802,592
2022 / 2021	778,605	515,857
2021 / 2020	494,554	166,539
Prior	348,860	196,262
Revolving loans	448,923	432,843
Total	3,878,530	3,760,930
Watch
Financing Receivable, Credit Quality Indicator [Line Items]
2025 / 2024	12,701	8,921
2024 / 2023	2,441	26,306
2023 / 2022	20,536	2,049
2022 / 2021	1,974	2,063
2021 / 2020	2,059	4,800
Prior	7,042	2,963
Revolving loans	1,022	1,141
Total	47,775	48,243
Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2025 / 2024	1,037	7,590
2024 / 2023	7,737	1,458
2023 / 2022	1,330	29,004
2022 / 2021	27,204	486
2021 / 2020	476	146
Prior	1,953	1,518
Revolving loans	694	660
Total	40,431	40,862
Construction and land development
Financing Receivable, Credit Quality Indicator [Line Items]
2025 / 2024	56,857
2024 / 2023	98,819
2023 / 2022	159,752
2022 / 2021	27,323
2021 / 2020	2,463
Prior	4,473
Revolving loans	1,794
Total	351,481
Construction and land development | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2025 / 2024	51,908
2024 / 2023	97,383
2023 / 2022	159,720
2022 / 2021	27,195
2021 / 2020	2,463
Prior	4,388
Revolving loans	1,794
Total	344,851
Construction and land development | Watch
Financing Receivable, Credit Quality Indicator [Line Items]
2025 / 2024	4,949
2024 / 2023	275
2022 / 2021	128
Prior	85
Total	5,437
Construction and land development | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2024 / 2023	1,161
2023 / 2022	32
Total	1,193
Agriculture real estate
Financing Receivable, Credit Quality Indicator [Line Items]
2025 / 2024	13,839
2024 / 2023	39,909
2023 / 2022	45,167
2022 / 2021	55,583
2021 / 2020	47,977
Prior	18,781
Revolving loans	18,531
Total	239,787
Agriculture real estate | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2025 / 2024	13,804
2024 / 2023	37,392
2023 / 2022	44,730
2022 / 2021	55,391
2021 / 2020	47,698
Prior	18,522
Revolving loans	18,484
Total	236,021
Agriculture real estate | Watch
Financing Receivable, Credit Quality Indicator [Line Items]
2024 / 2023	252
2023 / 2022	121
2022 / 2021	192
Prior	259
Total	824
Agriculture real estate | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2025 / 2024	35
2024 / 2023	2,265
2023 / 2022	316
2021 / 2020	279
Revolving loans	47
Total	2,942
Commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
2025 / 2024	33,405	117,476
2024 / 2023	100,716	60,929
2023 / 2022	56,732	44,107
2022 / 2021	41,374	43,879
2021 / 2020	41,229	3,261
Prior	10,167	5,860
Revolving loans	173,395	174,635
Total	457,018	450,147
Commercial and industrial | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2025 / 2024	31,499	116,173
2024 / 2023	100,314	60,404
2023 / 2022	56,216	43,205
2022 / 2021	40,472	43,879
2021 / 2020	41,221	3,145
Prior	9,206	4,863
Revolving loans	173,034	174,181
Total	451,962	445,850
Commercial and industrial | Watch
Financing Receivable, Credit Quality Indicator [Line Items]
2025 / 2024	1,906	1,031
2024 / 2023	201	250
2023 / 2022	257	43
2022 / 2021	43
2021 / 2020	8
Prior	209	228
Revolving loans	286	404
Total	2,910	1,956
Commercial and industrial | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2025 / 2024		272
2024 / 2023	201	275
2023 / 2022	259	859
2022 / 2021	859
2021 / 2020		116
Prior	752	769
Revolving loans	75	50
Total	2,146	2,341
Agriculture production
Financing Receivable, Credit Quality Indicator [Line Items]
2025 / 2024	13,493	41,155
2024 / 2023	37,896	11,348
2023 / 2022	10,540	4,328
2022 / 2021	3,938	6,176
2021 / 2020	5,868	1,965
Prior	2,140	383
Revolving loans	126,340	110,613
Total	200,215	175,968
Agriculture production | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2025 / 2024	13,323	40,980
2024 / 2023	37,828	11,288
2023 / 2022	10,533	4,115
2022 / 2021	3,926	6,159
2021 / 2020	5,851	1,965
Prior	2,114	229
Revolving loans	126,123	110,396
Total	199,698	175,132
Agriculture production | Watch
Financing Receivable, Credit Quality Indicator [Line Items]
2025 / 2024	128	170
2024 / 2023	68	37
2023 / 2022	2	204
2022 / 2021	3
Prior		127
Revolving loans	217	217
Total	418	755
Agriculture production | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2025 / 2024	42	5
2024 / 2023		23
2023 / 2022	5	9
2022 / 2021	9	17
2021 / 2020	17
Prior	26	27
Total	99	81
Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
2025 / 2024	12,468	30,317
2024 / 2023	21,909	17,321
2023 / 2022	14,716	6,558
2022 / 2021	5,460	2,271
2021 / 2020	1,789	467
Prior	361	54
Revolving loans	2,032	2,683
Total	58,735	59,671
Consumer | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2025 / 2024	12,468	30,317
2024 / 2023	21,875	17,318
2023 / 2022	14,664	6,547
2022 / 2021	5,448	2,268
2021 / 2020	1,785	467
Prior	361	54
Revolving loans	2,032	2,683
Total	58,633	59,654
Consumer | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2024 / 2023	34	3
2023 / 2022	52	11
2022 / 2021	12	3
2021 / 2020	4
Total	102	17
All other loans
Financing Receivable, Credit Quality Indicator [Line Items]
2025 / 2024	4	1,139
2024 / 2023	1,128	644
2023 / 2022	597	122
2022 / 2021	82	217
2021 / 2020	214	43
Prior	1,674	1,816
Total	3,699	3,981
All other loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2025 / 2024	4	1,139
2024 / 2023	1,128	644
2023 / 2022	597	122
2022 / 2021	82	217
2021 / 2020	214	43
Prior	1,674	1,816
Total	3,699	3,981
Secured by real estate | 1-4 residential real estate
Financing Receivable, Credit Quality Indicator [Line Items]
2025 / 2024	60,451	169,297
2024 / 2023	154,424	158,616
2023 / 2022	149,109	195,332
2022 / 2021	186,394	143,300
2021 / 2020	139,184	66,420
Prior	153,975	93,045
Revolving loans	99,379	99,387
Total	942,916	925,397
Secured by real estate | 1-4 residential real estate | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2025 / 2024	59,431	167,734
2024 / 2023	152,857	157,530
2023 / 2022	148,199	195,002
2022 / 2021	185,830	142,721
2021 / 2020	138,617	66,292
Prior	153,107	92,728
Revolving loans	99,379	99,365
Total	937,420	921,372
Secured by real estate | 1-4 residential real estate | Watch
Financing Receivable, Credit Quality Indicator [Line Items]
2025 / 2024	60	877
2024 / 2023	809	289
2023 / 2022	287	87
2022 / 2021	238	396
2021 / 2020	391	98
Prior	118	23
Total	1,903	1,770
Secured by real estate | 1-4 residential real estate | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2025 / 2024	960	686
2024 / 2023	758	797
2023 / 2022	623	243
2022 / 2021	326	183
2021 / 2020	176	30
Prior	750	294
Revolving loans		22
Total	3,593	2,255
Secured by real estate | Commercial Real Estate | Non-owner occupied
Financing Receivable, Credit Quality Indicator [Line Items]
2025 / 2024	25,332	125,572
2024 / 2023	106,297	249,077
2023 / 2022	255,902	320,030
2022 / 2021	317,471	103,893
2021 / 2020	101,497	38,134
Prior	90,001	56,594
Revolving loans	7,178	6,470
Total	903,678	899,770
Secured by real estate | Commercial Real Estate | Non-owner occupied | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2025 / 2024	20,261	120,914
2024 / 2023	106,090	232,802
2023 / 2022	242,653	294,138
2022 / 2021	291,892	102,380
2021 / 2020	99,987	33,691
Prior	84,799	55,190
Revolving loans	7,178	6,470
Total	852,860	845,585
Secured by real estate | Commercial Real Estate | Non-owner occupied | Watch
Financing Receivable, Credit Quality Indicator [Line Items]
2025 / 2024	5,071	4,658
2024 / 2023	207	16,232
2023 / 2022	13,206	209
2022 / 2021	206	1,513
2021 / 2020	1,510	4,443
Prior	5,202	1,404
Total	25,402	28,459
Secured by real estate | Commercial Real Estate | Non-owner occupied | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2024 / 2023		43
2023 / 2022	43	25,683
2022 / 2021	25,373
Total	25,416	25,726
Secured by real estate | Commercial Real Estate | Owner occupied
Financing Receivable, Credit Quality Indicator [Line Items]
2025 / 2024	26,797	67,736
2024 / 2023	62,793	105,268
2023 / 2022	97,522	92,738
2022 / 2021	88,638	87,129
2021 / 2020	83,220	25,664
Prior	57,451	27,733
Revolving loans	21,609	21,208
Total	438,030	427,476
Secured by real estate | Commercial Real Estate | Owner occupied | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2025 / 2024	26,210	63,251
2024 / 2023	58,846	98,776
2023 / 2022	90,859	89,361
2022 / 2021	86,849	86,975
2021 / 2020	83,070	25,664
Prior	55,857	26,124
Revolving loans	20,518	20,147
Total	422,209	410,298
Secured by real estate | Commercial Real Estate | Owner occupied | Watch
Financing Receivable, Credit Quality Indicator [Line Items]
2025 / 2024	587	1,252
2024 / 2023	629	6,492
2023 / 2022	6,663	1,178
2022 / 2021	1,164	154
2021 / 2020	150
Prior	1,169	1,181
Revolving loans	519	520
Total	10,881	10,777
Secured by real estate | Commercial Real Estate | Owner occupied | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2025 / 2024		3,233
2024 / 2023	3,318
2023 / 2022		2,199
2022 / 2021	625
Prior	425	428
Revolving loans	572	541
Total	4,940	6,401
Secured by real estate | Multi-family real estate
Financing Receivable, Credit Quality Indicator [Line Items]
2025 / 2024	15,824	36,518
2024 / 2023	24,791	157,471
2023 / 2022	156,181	86,171
2022 / 2021	81,520	77,545
2021 / 2020	73,648	21,438
Prior	18,832	5,341
Revolving loans	381	80
Total	371,177	384,564
Secured by real estate | Multi-family real estate | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2025 / 2024	15,824	36,518
2024 / 2023	24,791	157,471
2023 / 2022	156,181	86,171
2022 / 2021	81,520	77,545
2021 / 2020	73,648	21,438
Prior	18,832	5,341
Revolving loans	381	80
Total	371,177	384,564
Secured by real estate | Construction and land development
Financing Receivable, Credit Quality Indicator [Line Items]
2025 / 2024		105,943
2024 / 2023		146,480
2023 / 2022		27,655
2022 / 2021		4,379
2021 / 2020		3,887
Prior		679
Revolving loans		1,518
Total	351,481	290,541
Secured by real estate | Construction and land development | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2025 / 2024		104,162
2024 / 2023		143,538
2023 / 2022		27,524
2022 / 2021		4,379
2021 / 2020		3,887
Prior		679
Revolving loans		1,518
Total		285,687
Secured by real estate | Construction and land development | Watch
Financing Receivable, Credit Quality Indicator [Line Items]
2025 / 2024		652
2024 / 2023		2,906
2023 / 2022		131
Total		3,689
Secured by real estate | Construction and land development | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2025 / 2024		1,129
2024 / 2023		36
Total		1,165
Secured by real estate | Agriculture real estate
Financing Receivable, Credit Quality Indicator [Line Items]
2025 / 2024		42,037
2024 / 2023		46,768
2023 / 2022		56,604
2022 / 2021		49,617
2021 / 2020		10,206
Prior		9,238
Revolving loans		18,050
Total	$ 239,787	232,520
Secured by real estate | Agriculture real estate | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2025 / 2024		39,491
2024 / 2023		46,387
2023 / 2022		56,407
2022 / 2021		49,334
2021 / 2020		9,947
Prior		9,238
Revolving loans		18,003
Total		228,807
Secured by real estate | Agriculture real estate | Watch
Financing Receivable, Credit Quality Indicator [Line Items]
2025 / 2024		281
2024 / 2023		100
2023 / 2022		197
2021 / 2020		259
Total		837
Secured by real estate | Agriculture real estate | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2025 / 2024		2,265
2024 / 2023		281
2022 / 2021		283
Revolving loans		47
Total		$ 2,876