Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income	$ 85,888	$ 81,825	$ 84,137
Adjustments to Reconcile Net Income to Net Cash from Operating Activities:
Net Amortization on Securities	5,566	6,452	6,638
Depreciation and Amortization	9,560	10,116	8,770
Loans Originated for Sale	(106,781)	(162,959)	(261,529)
Proceeds from Sales of Loans Held-for-Sale	112,525	171,591	276,417
Provision for Credit Losses	2,550	6,350	(6,500)
Gain on Sale of Loans, net	(2,363)	(3,818)	(8,267)
Gain on Securities, net	(40)	(562)	(2,247)
Loss (Gain) on Sales of Other Real Estate and Repossessed Assets	(83)	(18)	(101)
Loss (Gain) on Disposition and Donation of Premises and Equipment	(547)	(37)	1,640
Loss (Gain) on Disposition of Land	(83)	0	0
Post Retirement Medical Benefit	0	54	0
Increase in Cash Surrender Value of Company Owned Life Insurance	(1,842)	(1,820)	(1,369)
Equity Based Compensation	2,332	2,330	1,724
Change in Assets and Liabilities:
Interest Receivable and Other Assets	3,725	(1,094)	2,716
Interest Payable and Other Liabilities	(3,173)	1,626	(1,185)
Net Cash from Operating Activities	107,234	110,036	100,844
CASH FLOWS FROM INVESTING ACTIVITIES
Proceeds from Maturity of Other Short-term Investments	0	495	496
Proceeds from Maturities of Securities Available-for-Sale	287,084	143,418	208,156
Proceeds from Sales of Securities Available-for-Sale	114,259	145,237	111,124
Purchase of Securities Available-for-Sale	(183,302)	(417,940)	(1,020,695)
Proceeds from Redemption of Federal Home Loan Bank Stock	350	8,089	120
Purchase of Loans	(1,502)	(933)	0
Proceeds from Sales of Loans Held for Investment	0	3,916	0
Loans Made to Customers, net of Payments Received	(187,624)	(107,236)	59,557
Proceeds from Sales of Other Real Estate	108	88	1,423
Property and Equipment Expenditures	(5,745)	(7,852)	(4,686)
Proceeds from Sale of Land and Building	3,627	0	1,963
Proceeds from Life Insurance	0	773	549
Sale of Bank Branches	0	0	1,694
Acquisition of Citizens Union Bancorp of Shelbyville, Inc.	0	207,764	0
Net Cash from Investing Activities	27,255	(24,181)	(640,299)
CASH FLOWS FROM FINANCING ACTIVITIES
Change in Deposits	(96,782)	(324,771)	655,485
Change in Short-term Borrowings	(35,193)	29,817	15,423
Advances in Long-term Debt	25,000	0	0
Repayments of Long-term Debt	(132)	(41,690)	(58,091)
Issuance (Retirement) of Common Stock	0	0	0
Dividends Paid	(29,433)	(27,022)	(22,220)
Net Cash from Financing Activities	(136,540)	(363,666)	590,597
Net Change in Cash and Cash Equivalents	(2,051)	(277,811)	51,142
Cash and Cash Equivalents at Beginning of Year	117,381	395,192	344,050
Cash and Cash Equivalents at End of Year	115,330	117,381	395,192
Cash Paid During the Year for
Interest	60,663	17,442	10,020
Income Taxes	15,375	11,649	14,434
Supplemental Non Cash Disclosures
Loans Transferred to Other Real Estate	0	30	0
Reclass of Land & Buildings to Other Assets	691	0	0
Interest Rate Swap Fair Value Activity	$ (2,282)	$ 4,988	$ (4,287)