Loans and Allowance for Credit Losses - Collateral dependent loans and related ACL (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Jun. 30, 2024	Sep. 30, 2023	Jun. 30, 2023
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	$ 3,966,736	$ 3,850,035
Related allowance for credit losses	54,437	52,516	$ 49,122	$ 47,820
Construction and land development
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	351,481
Agriculture real estate
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	239,787
Commercial and industrial
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	457,018	450,147
Related allowance for credit losses	6,114	6,233	5,134	5,235
Agriculture production
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	200,215	175,968
Related allowance for credit losses	784	835	697	782
Consumer
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	58,735	59,671
Related allowance for credit losses	526	578	453	490
All other loans
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	3,699	3,981
Related allowance for credit losses	14	17	16	21
Secured by real estate | 1-4 residential real estate
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	942,916	925,397
Related allowance for credit losses	10,637	10,528	9,371	9,474
Secured by real estate | Commercial Real Estate | Non-owner occupied
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	903,678	899,770
Related allowance for credit losses	20,728	19,055	16,504	13,863
Secured by real estate | Commercial Real Estate | Owner occupied
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	438,030	427,476
Related allowance for credit losses	4,814	4,815	4,879	5,168
Secured by real estate | Multi-family real estate
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	371,177	384,564
Related allowance for credit losses	5,118	5,447	6,097	6,806
Secured by real estate | Construction and land development
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	351,481	290,541
Related allowance for credit losses	3,675	2,901	3,545	3,414
Secured by real estate | Agriculture real estate
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	239,787	232,520
Related allowance for credit losses	2,027	2,107	$ 2,426	$ 2,567
Commercial Real Estate
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	23,704	23,457
Commercial Real Estate | Commercial Real Estate | Non-owner occupied
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	23,204	23,457
Commercial Real Estate | Commercial Real Estate | Owner occupied
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	500
Residential Real Estate
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	790	797
Residential Real Estate | 1-4 residential real estate
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	790	797
Construction and Land Development
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	1,161
Construction and Land Development | Construction and land development
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	1,161
Other
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	1,671	2,705
Other | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	1,671	2,705
Collateral Pledged
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	27,326	26,959
Related allowance for credit losses	13,126	10,926
Collateral Pledged | 1-4 residential real estate
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	790	797
Related allowance for credit losses	108	116
Collateral Pledged | Commercial Real Estate | Non-owner occupied
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	23,204	23,457
Related allowance for credit losses	12,079	10,175
Collateral Pledged | Commercial Real Estate | Owner occupied
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	500
Related allowance for credit losses	164
Collateral Pledged | Construction and land development
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	1,161
Related allowance for credit losses	161
Collateral Pledged | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	1,671	2,705
Related allowance for credit losses	$ 614	$ 635