Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income	$ 84,137	$ 62,210	$ 59,222
Adjustments to Reconcile Net Income to Net Cash from Operating Activities:
Net Amortization on Securities	6,638	5,671	3,862
Depreciation and Amortization	8,770	9,429	8,630
Loans Originated for Sale	(261,529)	(317,032)	(198,326)
Proceeds from Sales of Loans Held-for-Sale	276,417	327,172	189,875
Provision for Credit Losses	(6,500)	17,550	5,325
Gain on Sale of Loans, net	(8,267)	(9,908)	(4,633)
Gain on Securities, net	(2,247)	(4,081)	(1,248)
Loss (Gain) on Sales of Other Real Estate and Repossessed Assets	(101)	28	200
Loss (Gain) on Disposition and Donation of Premises and Equipment	1,640	223	111
Loss (Gain) on Disposition of Land	0	43	(352)
Post Retirement Medical Benefit	0	0	(228)
Increase in Cash Surrender Value of Company Owned Life Insurance	(1,369)	(1,449)	(1,407)
Equity Based Compensation	1,724	1,051	1,287
Excess Tax Benefit from Restricted Share Grant	0	3	25
Change in Assets and Liabilities:
Interest Receivable and Other Assets	2,716	(2,925)	(1,602)
Interest Payable and Other Liabilities	(1,185)	4,433	4,488
Net Cash from Operating Activities	100,844	92,418	65,229
CASH FLOWS FROM INVESTING ACTIVITIES
Proceeds from Maturity of Other Short-term Investments	496	744	496
Proceeds from Maturities of Securities Available-for-Sale	208,156	200,968	114,669
Proceeds from Sales of Securities Available-for-Sale	111,124	125,106	82,601
Purchase of Securities Available-for-Sale	(1,020,695)	(664,989)	(169,640)
Proceeds from Redemption of Federal Home Loan Bank Stock	120	800	1,145
Purchase of Loans	0	0	(2,051)
Proceeds from Sales of Loans Held for Investment	0	3,128	0
Loans Made to Customers, net of Payments Received	59,557	(10,114)	3,925
Proceeds from Sales of Other Real Estate	1,423	340	369
Property and Equipment Expenditures	(4,686)	(7,071)	(9,374)
Proceeds from Sale of Land and Building	1,963	3,928	1,761
Proceeds from Life Insurance	549	1,082	1,216
Sale of Bank Branches	1,694	0	0
Acquisition of Citizens First Corporation	0	0	5,545
Net Cash from Investing Activities	(640,299)	(346,078)	30,662
CASH FLOWS FROM FINANCING ACTIVITIES
Change in Deposits	655,485	676,906	(13,007)
Change in Short-term Borrowings	15,423	(114,832)	(82,037)
Advances in Long-term Debt	0	0	89,214
Repayments of Long-term Debt	(58,091)	(40,625)	(65,171)
Issuance (Retirement) of Common Stock	0	(5,789)	0
Dividends Paid	(22,220)	(20,136)	(17,556)
Net Cash from Financing Activities	590,597	495,524	(88,557)
Net Change in Cash and Cash Equivalents	51,142	241,864	7,334
Cash and Cash Equivalents at Beginning of Year	345,748	103,884	96,550
Cash and Cash Equivalents at End of Year	396,890	345,748	103,884
Cash Paid During the Year for
Interest	10,020	20,484	30,765
Income Taxes	14,434	11,505	7,977
Supplemental Non Cash Disclosures (See Note 18 for Business Combinations)
Loans Transferred to Other Real Estate	0	0	708
Reclassification of Land and Buildings to Other Assets	0	0	5,712
Right of Use Asset Obtained in Exchange for Lease Liabilities	$ 0	$ 0	$ 9,034