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	$ 30,075	$ 48,799	$ 49,857
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Provision for Credit Losses	3,381	4,798	272
Depreciation and Amortization	6,718	7,548	7,826
Loss on the Sale of Securities Available-for-Sale	9,097	0	0
Net Gain on Equity Securities	(9,005)	(427)	(111)
Loans Originated and Held-for-Sale	491	(799)	(48,720)
Proceeds from the Sale of Loans Held-for-Sale	32	1,380	61,044
Net Gains on the Sale of Loans	(32)	(83)	(2,393)
Net Gains on the Sale or Write-down of Premises and Equipment,     Other Real Estate Owned and Repossessed Assets	187	167	277
Contributions to Pension & Postretirement Plans	(681)	(741)	(622)
Deferred Income Tax Expense (Benefit)	1,799	(1,252)	945
Shares Issued Under the Directors’ Stock Plan	218	408	376
Stock-Based Compensation Expense	605	451	414
Tax Benefit from Exercise of Stock Options	11	34	69
Effect of Swap Agreements	(2,365)	0	0
Net Increase in Other Assets	(29,220)	(1,427)	(5,065)
Net Increase in Other Liabilities	9,269	857	4,037
Net Cash Provided By Operating Activities	20,580	59,713	68,206
Cash Flows from Investing Activities:
Proceeds from the Sale of Equity Securities	9,254	0	0
Proceeds from the Sale of Securities Available-for-Sale	100,739	0	0
Proceeds from the Maturities and Calls of Securities Available-for-Sale	70,415	104,120	118,330
Purchases of Securities Available-for-Sale	(73,623)	(184,785)	(323,372)
Proceeds from the Maturities and Calls of Securities Held-to-Maturity	51,724	32,068	30,561
Purchases of Securities Held-to-Maturity	(8,209)	(11,459)	(9,377)
Net Increase in Loans	(228,899)	(319,547)	(85,123)
Proceeds from the Sales of Premises and Equipment, Other    Real Estate Owned and Repossessed Assets	2,707	1,475	1,547
Purchase of Premises and Equipment	(7,081)	(14,250)	(7,137)
Net Decrease (Increase) in Federal Home Loan Bank Stock	1,015	(684)	(31)
Purchase of Bank Owned Life Insurance	(692)	0	0
Net Cash Used In Investing Activities	(82,650)	(393,062)	(274,602)
Cash Flows from Financing Activities:
Net Increase (Decrease) in Deposits	189,202	(52,133)	315,771
Other Borrowings - Advances	256,500	27,000	0
Other Borrowings - Paydowns	(284,800)	(17,200)	(17,486)
Finance Lease Payments	(53)	(50)	(48)
Purchase of Treasury Stock	(3,608)	(2,872)	(2,662)
Shares Issued for Stock Option Exercises, net	96	631	1,505
Shares Issued Under the Employee Stock Purchase Plan	120	477	481
Shares Issued for Dividend Reinvestment Plans	472	1,904	1,836
Cash Dividends Paid	(17,983)	(17,444)	(16,296)
Net Cash Provided (Used) By Financing Activities	139,946	(59,687)	283,101
Net Increase (Decrease) in Cash and Cash Equivalents	77,876	(393,036)	76,705
Cash and Cash Equivalents at Beginning of Year	64,660	457,696	380,991
Cash and Cash Equivalents at End of Year	142,536	64,660	457,696
Supplemental Disclosures to Statements of Cash Flow Information:
Interest on Deposits and Borrowings	51,828	5,752	5,373
Income Taxes	6,644	13,018	14,760
Transfer of Loans to Other Real Estate Owned and Repossessed Assets	$ 2,488	$ 1,656	$ 1,358