Loans - Allowance for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Allowance for Credit Losses [Roll Forward]
Beginning balance	$ 44,315	$ 45,078	$ 44,168	$ 37,017
Acquisition of Citizens Union Bank of Shelbyville, KY				3,117
Provision (Benefit) for Credit Losses	550	300	1,650	5,500
Loans charged-off	(849)	(447)	(2,087)	(816)
Recoveries collected	250	100	535	213
Total ending allowance balance	44,266	45,031	44,266	45,031
Commercial and Industrial Loans
Allowance for Credit Losses [Roll Forward]
Beginning balance	13,572	12,720	13,749	9,554
Acquisition of Citizens Union Bank of Shelbyville, KY				376
Provision (Benefit) for Credit Losses	244	874	746	3,662
Loans charged-off	(343)	(56)	(1,077)	(61)
Recoveries collected	94	7	149	14
Total ending allowance balance	13,567	13,545	13,567	13,545
Commercial Real Estate Loans
Allowance for Credit Losses [Roll Forward]
Beginning balance	22,062	23,217	21,598	19,245
Acquisition of Citizens Union Bank of Shelbyville, KY				1,945
Provision (Benefit) for Credit Losses	(233)	(873)	169	1,223
Loans charged-off	0	0	0	(78)
Recoveries collected	5	5	67	14
Total ending allowance balance	21,834	22,349	21,834	22,349
Agricultural Loans
Allowance for Credit Losses [Roll Forward]
Beginning balance	3,887	4,759	4,188	4,505
Acquisition of Citizens Union Bank of Shelbyville, KY				689
Provision (Benefit) for Credit Losses	94	(131)	(207)	(566)
Loans charged-off	(25)	0	(25)	0
Recoveries collected	0	0	0	0
Total ending allowance balance	3,956	4,628	3,956	4,628
Leases
Allowance for Credit Losses [Roll Forward]
Beginning balance	227	196	209	200
Acquisition of Citizens Union Bank of Shelbyville, KY				0
Provision (Benefit) for Credit Losses	8	(5)	26	(9)
Loans charged-off	0	0	0	0
Recoveries collected	0	0	0	0
Total ending allowance balance	235	191	235	191
Consumer Loans
Allowance for Credit Losses [Roll Forward]
Beginning balance	609	616	595	507
Acquisition of Citizens Union Bank of Shelbyville, KY				2
Provision (Benefit) for Credit Losses	174	293	399	518
Loans charged-off	(284)	(322)	(628)	(532)
Recoveries collected	141	81	274	173
Total ending allowance balance	640	668	640	668
Home Equity Loans
Allowance for Credit Losses [Roll Forward]
Beginning balance	1,415	1,207	1,344	1,061
Acquisition of Citizens Union Bank of Shelbyville, KY				0
Provision (Benefit) for Credit Losses	45	41	100	224
Loans charged-off	(25)	(15)	(39)	(52)
Recoveries collected	1	0	31	0
Total ending allowance balance	1,436	1,233	1,436	1,233
Credit Cards
Allowance for Credit Losses [Roll Forward]
Beginning balance	263	212	257	240
Acquisition of Citizens Union Bank of Shelbyville, KY				0
Provision (Benefit) for Credit Losses	157	73	281	79
Loans charged-off	(141)	(51)	(261)	(90)
Recoveries collected	9	5	11	10
Total ending allowance balance	288	239	288	239
Residential Mortgage Loans
Allowance for Credit Losses [Roll Forward]
Beginning balance	2,280	2,151	2,228	1,705
Acquisition of Citizens Union Bank of Shelbyville, KY				105
Provision (Benefit) for Credit Losses	61	28	136	369
Loans charged-off	(31)	(3)	(57)	(3)
Recoveries collected	0	2	3	2
Total ending allowance balance	2,310	2,178	2,310	2,178
Unallocated
Allowance for Credit Losses [Roll Forward]
Beginning balance	0	0	0	0
Acquisition of Citizens Union Bank of Shelbyville, KY				0
Provision (Benefit) for Credit Losses	0	0	0	0
Loans charged-off	0	0	0	0
Recoveries collected	0	0	0	0
Total ending allowance balance	$ 0	$ 0	$ 0	$ 0