Consolidated Statements Of Income (Unaudited) - USD ($) shares in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Interest Income
Interest and fees on loans	$ 31,874,000	$ 34,324,000
Interest and dividends on investment securities:
Taxable	6,223,000	5,242,000
Tax-exempt	1,216,000	1,253,000
Interest on deposits in depository institutions	238,000	118,000
Total Interest Income	39,551,000	40,937,000
Interest Expense
Interest on deposits	1,521,000	3,280,000
Interest on short-term borrowings	114,000	117,000
Total Interest Expense	1,635,000	3,397,000
Net Interest Income	37,916,000	37,540,000
Recovery of credit losses	(756,000)	(440,000)
Net Interest Income After Recovery of Credit Losses	38,672,000	37,980,000
Non-Interest Income
Net securities gains reclassified into earnings	0	283,000
Unrealized losses recognized on equity securities still held	(723,000)	(51,000)
Bank owned  life insurance	2,014,000	1,460,000
Other income	791,000	811,000
Total Non-Interest Income	17,448,000	16,630,000
Non-Interest Expense
Salaries and employee benefits	15,577,000	15,671,000
Occupancy related expense	2,709,000	2,622,000
Equipment and software related expense	2,769,000	2,544,000
FDIC insurance expense	435,000	405,000
Advertising	798,000	881,000
Bankcard expenses	1,606,000	1,584,000
Postage, delivery, and statement mailings	636,000	592,000
Office supplies	410,000	392,000
Legal and professional fees	527,000	675,000
Telecommunications	584,000	690,000
Repossessed asset losses, net of expenses	40,000	79,000
Other expenses	3,436,000	3,674,000
Total Non-Interest Expense	29,527,000	29,809,000
Income Before Income Taxes	26,593,000	24,801,000
Income tax expense	5,251,000	4,987,000
Net Income Available to Common Shareholders	$ 21,342,000	$ 19,814,000
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Average shares outstanding, basic (in shares)	14,974	15,656
Effect of dilutive securities (in shares)	28	31
Average shares outstanding, diluted (in shares)	15,002	15,687
Earnings Per Share [Abstract]
Basic earnings per common share (in dollars per share)	$ 1.41	$ 1.25
Diluted earnings per common share (in dollars per share)	$ 1.41	$ 1.25
Service charges
Non-Interest Income
Revenue from contract with customer	$ 6,725,000	$ 5,881,000
Bankcard revenue
Non-Interest Income
Revenue from contract with customer	6,444,000	6,213,000
Trust and investment management fee income
Non-Interest Income
Revenue from contract with customer	$ 2,197,000	$ 2,033,000