Loans and Allowance for Credit Losses - Balance and activity in the Allowance for credit losses (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023
Allowance for credit losses:
Balance, beginning of period	$ 54,437	$ 49,122	$ 52,516	$ 47,820
Provision (benefit) charged to expense	501	1,922	2,522	3,492
Losses charged off	(280)	(980)	(439)	(1,316)
Recoveries	82	20	141	88
Balance, end of period	54,740	50,084	54,740	50,084
Commercial and industrial
Allowance for credit losses:
Balance, beginning of period	6,114	5,134	6,233	5,235
Provision (benefit) charged to expense	1,943	894	1,858	794
Losses charged off	(26)	(180)	(65)	(185)
Recoveries	32	2	37	6
Balance, end of period	8,063	5,850	8,063	5,850
Agriculture production
Allowance for credit losses:
Balance, beginning of period	784	697	835	782
Provision (benefit) charged to expense	276	(127)	225	(212)
Balance, end of period	1,060	570	1,060	570
Consumer
Allowance for credit losses:
Balance, beginning of period	526	453	578	490
Provision (benefit) charged to expense	202	103	215	141
Losses charged off	(129)	(120)	(201)	(208)
Recoveries	4	18	11	31
Balance, end of period	603	454	603	454
All other loans
Allowance for credit losses:
Balance, beginning of period	14	16	17	21
Provision (benefit) charged to expense	10	1	7	(4)
Balance, end of period	24	17	24	17
Secured by real estate
Allowance for credit losses:
Balance, beginning of period	10,637	9,371
Provision (benefit) charged to expense	1,983	209
Losses charged off	(2)	(6)
Recoveries	46
Balance, end of period	12,664	9,574	12,664	9,574
Secured by real estate | 1-4 residential real estate
Allowance for credit losses:
Balance, beginning of period			10,528	9,474
Provision (benefit) charged to expense			2,140	108
Losses charged off			(50)	(41)
Recoveries			46	33
Balance, end of period	12,664	9,574	12,664	9,574
Secured by real estate | 1-4 residential real estate | Non-owner occupied
Allowance for credit losses:
Balance, beginning of period	20,728
Provision (benefit) charged to expense	(7,068)
Balance, end of period	13,660		13,660
Secured by real estate | Commercial Real Estate | Non-owner occupied
Allowance for credit losses:
Balance, beginning of period		16,504	19,055	13,863
Provision (benefit) charged to expense		591	(5,395)	3,232
Losses charged off		(496)		(496)
Balance, end of period	13,660	16,599	13,660	16,599
Secured by real estate | Commercial Real Estate | Owner occupied
Allowance for credit losses:
Balance, beginning of period	4,814	4,879	4,815	5,168
Provision (benefit) charged to expense	1,015	(65)	1,014	(354)
Losses charged off	(122)		(122)
Balance, end of period	5,707	4,814	5,707	4,814
Secured by real estate | Multi-family real estate
Allowance for credit losses:
Balance, beginning of period	5,118	6,097	5,447	6,806
Provision (benefit) charged to expense	607	91	231	(521)
Losses charged off				(97)
Recoveries			47
Balance, end of period	5,725	6,188	5,725	6,188
Secured by real estate | Construction and land development
Allowance for credit losses:
Balance, beginning of period	3,675	3,545	2,901	3,414
Provision (benefit) charged to expense	1,043	272	1,817	496
Losses charged off	(1)	(178)	(1)	(289)
Recoveries				18
Balance, end of period	4,717	3,639	4,717	3,639
Secured by real estate | Agriculture real estate
Allowance for credit losses:
Balance, beginning of period	2,027	2,426	2,107	2,567
Provision (benefit) charged to expense	490	(47)	410	(188)
Balance, end of period	$ 2,517	$ 2,379	$ 2,517	$ 2,379