Consolidated Statements Of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Interest Income
Interest and fees on loans	$ 136,676	$ 150,498	$ 170,012
Interest on investment securities:
Taxable	23,071	23,355	23,389
Tax-exempt	5,027	3,914	2,967
Interest on deposits in depository institutions	693	492	1,332
Total Interest Income	165,467	178,259	197,700
Interest Expense
Interest on deposits	9,405	22,522	32,666
Interest on short-term borrowings	489	993	3,491
Interest on long-term debt	0	100	182
Total Interest Expense	9,894	23,615	36,339
Net Interest Income	155,573	154,644	161,361
(Recovery of) provision for credit losses	(3,165)	10,722	(1,250)
Net Interest Income After (Recovery of) Provision for Credit Losses	158,738	143,922	162,611
Non-Interest Income
Net gains on sale of investment securities	312	62	69
Unrealized gains (losses) recognized on equity securities still held	504	(863)	888
Revenue	64,930	61,220	63,767
Bank owned  life insurance	3,895	4,424	3,766
Sale of VISA shares	0	17,837	0
Other income	3,989	4,692	4,000
Total Non-Interest Income	69,641	82,680	68,490
Non-Interest Expense
Salaries and employee benefits	61,850	62,074	62,138
Occupancy related expenses	10,083	9,765	10,595
Equipment and software related expenses	10,486	10,200	8,964
FDIC insurance expense	1,583	884	638
Advertising	3,091	2,776	3,344
Bankcard expenses	6,455	5,893	5,555
Postage, delivery, and statement mailings	2,323	2,268	2,416
Office supplies	1,547	1,556	1,559
Legal and professional fees	2,279	2,176	2,371
Telecommunications	2,858	2,129	2,455
Repossessed asset (gains) losses, net of expenses	(57)
Repossessed asset (gains) losses, net of expenses		245	634
Merger related costs	0	0	797
Other expenses	14,687	15,324	16,148
Total Non-Interest Expense	117,185	115,290	117,614
Income Before Income Taxes	111,194	111,312	113,487
Income tax expense	23,114	21,717	24,135
Net Income Available to Common Shareholders	$ 88,080	$ 89,595	$ 89,352
Average shares outstanding, basic	15,381	15,975	16,314
Effect of dilutive securities	26	20	19
Average shares outstanding, diluted	15,407	15,995	16,333
Basic earnings per common share	$ 5.67	$ 5.55	$ 5.43
Diluted earnings per common share	$ 5.66	$ 5.55	$ 5.42
Deposit Account
Non-Interest Income
Revenue	$ 25,539	$ 25,733	$ 31,515
Debit Card
Non-Interest Income
Revenue	26,987	23,059	21,093
Fiduciary and Trust
Non-Interest Income
Revenue	$ 8,415	$ 7,736	$ 7,159