Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash Flows from Operating Activities:
Net Income	$ 48,799	$ 49,857	$ 40,827
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Provision for Credit Losses	4,798	272	9,319
Depreciation and Amortization	7,548	7,826	6,867
Loss on the Sale of Securities Available-for-Sale	0	0	37
Net (Gain) Loss on Equity Securities	(427)	(111)	427
Loans Originated and Held-for-Sale	(799)	(48,720)	(94,773)
Proceeds from the Sale of Loans Held-for-Sale	1,380	61,044	87,729
Net Gains on the Sale of Loans	(83)	(2,393)	(3,889)
Net Gains (Losses) on the Sale or Write-down of Premises and Equipment,     Other Real Estate Owned and Repossessed Assets	167	277	(161)
Contributions to Pension & Postretirement Plans	(741)	(622)	(673)
Deferred Income Tax (Benefit) Expense	(1,252)	945	(2,240)
Shares Issued Under the Directors’ Stock Plan	408	376	125
Stock-Based Compensation Expense	451	414	420
Tax Benefit from Exercise of Stock Options	34	69	52
Net Increase in Other Assets	(1,427)	(5,065)	(2,339)
Net Increase in Other Liabilities	857	4,037	586
Net Cash Provided By Operating Activities	59,713	68,206	42,314
Cash Flows from Investing Activities:
Proceeds from the Sale of Securities Available-for-Sale	0	0	65,273
Proceeds from the Maturities and Calls of Securities Available-for-Sale	104,120	118,330	104,941
Purchases of Securities Available-for-Sale	(184,785)	(323,372)	(173,234)
Proceeds from the Maturities and Calls of Securities Held-to-Maturity	32,068	30,561	33,896
Purchases of Securities Held-to-Maturity	(11,459)	(9,377)	(7,953)
Net Increase in Loans	(319,547)	(85,123)	(200,554)
Proceeds from the Sales of Premises and Equipment, Other    Real Estate Owned and Repossessed Assets	1,475	1,547	2,478
Purchase of Premises and Equipment	(14,250)	(7,137)	(5,132)
Net (Increase) Decrease in Federal Home Loan Bank Stock	(684)	(31)	4,968
Purchase of Bank Owned Life Insurance	0	0	(12,000)
Net Cash Used In Investing Activities	(393,062)	(274,602)	(187,317)
Cash Flows from Financing Activities:
Net (Decrease) Increase in Deposits	(52,133)	315,771	618,672
Net Increase (Decrease) in Short-Term Federal Home Loan Bank Borrowings	27,000	0	(130,000)
Net Decrease in Short-Term Borrowings	0	(17,486)	(33,613)
Federal Home Loan Bank Advances	0	0	45,000
Finance Lease Payments	(50)	(48)	(37)
Repayments of Federal Home Loan Bank Advances	(17,200)	0	(30,000)
Purchase of Treasury Stock	(2,872)	(2,662)	(1,578)
Shares Issued for Stock Option Exercises, net	631	1,505	748
Shares Issued Under the Employee Stock Purchase Plan	477	481	513
Shares Issued for Dividend Reinvestment Plans	1,904	1,836	1,808
Cash Dividends Paid	(17,444)	(16,296)	(15,740)
Net Cash (Used) Provided By Financing Activities	(59,687)	283,101	455,773
Net (Decrease) Increase in Cash and Cash Equivalents	(393,036)	76,705	310,770
Cash and Cash Equivalents at Beginning of Year	457,696	380,991	70,221
Cash and Cash Equivalents at End of Year	64,660	457,696	380,991
Supplemental Disclosures to Statements of Cash Flow Information:
Interest on Deposits and Borrowings	5,752	5,373	13,799
Income Taxes	13,018	14,760	10,969
Non-cash Investing and Financing Activity:
Transfer of Loans to Other Real Estate Owned and Repossessed Assets	$ 1,656	$ 1,358	$ 1,000