Loans and Allowance for Credit Losses - Collateral dependent loans and related ACL (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	$ 4,027,181		$ 3,850,035
Related allowance for credit losses	54,740	$ 54,437	52,516	$ 50,084	$ 49,122	$ 47,820
Construction and land development
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	393,388
Agriculture real estate
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	239,912
Commercial and industrial
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	484,799		450,147
Related allowance for credit losses	8,063	6,114	6,233	5,850	5,134	5,235
Agriculture production
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	188,284		175,968
Related allowance for credit losses	1,060	784	835	570	697	782
Consumer
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	56,017		59,671
Related allowance for credit losses	603	526	578	454	453	490
All other loans
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	3,628		3,981
Related allowance for credit losses	24	14	17	17	16	21
Secured by real estate
Financing Receivable, Past Due [Line Items]
Related allowance for credit losses	12,664	10,637		9,574	9,371
Secured by real estate | 1-4 residential real estate
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	967,196		925,397
Related allowance for credit losses	12,664		10,528	9,574		9,474
Secured by real estate | 1-4 residential real estate | Non-owner occupied
Financing Receivable, Past Due [Line Items]
Related allowance for credit losses	13,660	20,728
Secured by real estate | Commercial Real Estate | Non-owner occupied
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	882,484		899,770
Related allowance for credit losses	13,660		19,055	16,599	16,504	13,863
Secured by real estate | Commercial Real Estate | Owner occupied
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	435,392		427,476
Related allowance for credit losses	5,707	4,814	4,815	4,814	4,879	5,168
Secured by real estate | Multi-family real estate
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	376,081		384,564
Related allowance for credit losses	5,725	5,118	5,447	6,188	6,097	6,806
Secured by real estate | Construction and land development
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	393,388		290,541
Related allowance for credit losses	4,717	3,675	2,901	3,639	3,545	3,414
Secured by real estate | Agriculture real estate
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	239,912		232,520
Related allowance for credit losses	2,517	$ 2,027	2,107	$ 2,379	$ 2,426	$ 2,567
Commercial Real Estate
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	23,642		23,457
Commercial Real Estate | Commercial Real Estate | Non-owner occupied
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	23,099		23,457
Commercial Real Estate | Commercial Real Estate | Owner occupied
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	543
Residential Real Estate
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	784		797
Residential Real Estate | 1-4 residential real estate
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	784		797
Construction and Land Development
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	961
Construction and Land Development | Construction and land development
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	961
Other
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	2,386		2,705
Other | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	2,386		2,705
Collateral Pledged
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	27,773		26,959
Related allowance for credit losses	4,742		10,926
Collateral Pledged | 1-4 residential real estate
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	784		797
Related allowance for credit losses	103		116
Collateral Pledged | Commercial Real Estate | Non-owner occupied
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	23,099		23,457
Related allowance for credit losses	3,604		10,175
Collateral Pledged | Commercial Real Estate | Owner occupied
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	543
Related allowance for credit losses	208
Collateral Pledged | Construction and land development
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	961
Collateral Pledged | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	2,386		2,705
Related allowance for credit losses	$ 827		$ 635