Loans - Allowance for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Allowance for Credit Losses [Roll Forward]
Beginning balance	$ 44,266	$ 45,031	$ 44,168	$ 37,017
Acquisition of Citizens Union Bank of Shelbyville, KY				3,117
Provision (Benefit) for Credit Losses	900	350	2,550	5,850
Loans charged-off	(650)	(820)	(2,737)	(1,636)
Recoveries collected	130	138	665	351
Total ending allowance balance	44,646	44,699	44,646	44,699
Commercial and Industrial Loans
Allowance for Credit Losses [Roll Forward]
Beginning balance	13,567	13,545	13,749	9,554
Acquisition of Citizens Union Bank of Shelbyville, KY				376
Provision (Benefit) for Credit Losses	(436)	141	310	3,803
Loans charged-off	(175)	(238)	(1,252)	(299)
Recoveries collected	2	7	151	21
Total ending allowance balance	12,958	13,455	12,958	13,455
Commercial Real Estate Loans
Allowance for Credit Losses [Roll Forward]
Beginning balance	21,834	22,349	21,598	19,245
Acquisition of Citizens Union Bank of Shelbyville, KY				1,945
Provision (Benefit) for Credit Losses	1,117	(210)	1,286	1,013
Loans charged-off	(56)	(1)	(56)	(79)
Recoveries collected	5	5	72	19
Total ending allowance balance	22,900	22,143	22,900	22,143
Agricultural Loans
Allowance for Credit Losses [Roll Forward]
Beginning balance	3,956	4,628	4,188	4,505
Acquisition of Citizens Union Bank of Shelbyville, KY				689
Provision (Benefit) for Credit Losses	(168)	(99)	(375)	(665)
Loans charged-off	(2)	0	(27)	0
Recoveries collected	0	0	0	0
Total ending allowance balance	3,786	4,529	3,786	4,529
Leases
Allowance for Credit Losses [Roll Forward]
Beginning balance	235	191	209	200
Acquisition of Citizens Union Bank of Shelbyville, KY				0
Provision (Benefit) for Credit Losses	19	27	45	18
Loans charged-off	0	0	0	0
Recoveries collected	0	0	0	0
Total ending allowance balance	254	218	254	218
Consumer Loans
Allowance for Credit Losses [Roll Forward]
Beginning balance	640	668	595	507
Acquisition of Citizens Union Bank of Shelbyville, KY				2
Provision (Benefit) for Credit Losses	258	305	657	823
Loans charged-off	(352)	(495)	(980)	(1,027)
Recoveries collected	119	116	393	289
Total ending allowance balance	665	594	665	594
Home Equity Loans
Allowance for Credit Losses [Roll Forward]
Beginning balance	1,436	1,233	1,344	1,061
Acquisition of Citizens Union Bank of Shelbyville, KY				0
Provision (Benefit) for Credit Losses	9	85	109	309
Loans charged-off	0	(5)	(39)	(57)
Recoveries collected	2	0	33	0
Total ending allowance balance	1,447	1,313	1,447	1,313
Credit Cards
Allowance for Credit Losses [Roll Forward]
Beginning balance	288	239	257	240
Acquisition of Citizens Union Bank of Shelbyville, KY				0
Provision (Benefit) for Credit Losses	93	52	374	131
Loans charged-off	(64)	(63)	(325)	(153)
Recoveries collected	2	8	13	18
Total ending allowance balance	319	236	319	236
Residential Mortgage Loans
Allowance for Credit Losses [Roll Forward]
Beginning balance	2,310	2,178	2,228	1,705
Acquisition of Citizens Union Bank of Shelbyville, KY				105
Provision (Benefit) for Credit Losses	8	49	144	418
Loans charged-off	(1)	(18)	(58)	(21)
Recoveries collected	0	2	3	4
Total ending allowance balance	$ 2,317	$ 2,211	$ 2,317	$ 2,211