Consolidated Statements Of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Interest Income
Interest and fees on loans	$ 32,918	$ 30,104
Interest and dividends on investment securities:
Taxable	3,981	3,444
Tax-exempt	703	663
Interest on deposits in depository institutions	42	3
Total Interest Income	37,644	34,214
Interest Expense
Interest on deposits	4,326	3,429
Interest on short-term borrowings	460	157
Interest on long-term debt	211	181
Total Interest Expense	4,997	3,767
Net Interest Income	32,647	30,447
Provision for loan losses	181	681
Net Interest Income After Provision for Loan Losses	32,466	29,766
Non-Interest Income
Net gains on sale of investment securities	0	4,276
Service charges	6,862	6,730
Bankcard revenue	4,334	4,140
Trust and investment management fee income	1,568	1,386
Bank owned life insurance	821	1,229
Other income	907	746
Total Non-Interest Income	14,492	18,507
Non-Interest Expense
Salaries and employee benefits	13,151	12,948
Occupancy related expense	2,404	2,473
Equipment and software related expense	1,831	1,890
FDIC insurance expense	315	375
Advertising	787	733
Bankcard expenses	1,076	943
Postage, delivery, and statement mailings	578	555
Office supplies	313	361
Legal and professional fees	450	449
Telecommunications	500	484
Repossessed asset losses, net of expenses	370	336
Other expenses	3,162	3,053
Total Non-Interest Expense	24,937	24,600
Income Before Income Taxes	22,021	23,673
Income tax expense	4,405	7,647
Net Income Available to Common Shareholders	17,616	16,026
Total Comprehensive Income	$ 9,398	$ 16,899
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Average common shares outstanding, basic (in shares)	15,414	15,252
Effect of dilutive securities (in shares)	22	25
Average common shares outstanding, diluted (in shares)	15,436	15,277
Earnings Per Share [Abstract]
Basic earnings per common share (in dollars per share)	$ 1.13	$ 1.04
Diluted earnings per common share (in dollars per share)	1.13	1.04
Dividends declared per common share (in dollars per share)	$ 0.46	$ 0.44