Consolidated Statements Of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Interest Income
Interest and fees on loans	$ 32,004	$ 29,444	$ 93,223	$ 88,011
Interest and dividends on investment securities:
Taxable	3,666	3,183	10,591	9,115
Tax-exempt	665	419	2,014	1,141
Interest on deposits in depository institutions	31	0	51
Total Interest Income	36,366	33,046	105,879	98,267
Interest Expense
Interest on deposits	3,796	3,006	10,885	8,915
Interest on short-term borrowings	349	90	693	283
Interest on long-term debt	195	172	565	503
Total Interest Expense	4,340	3,268	12,143	9,701
Net Interest Income	32,026	29,778	93,736	88,566
Provision for loan losses	1,393	1,432	2,584	3,093
Net Interest Income After Provision for Loan Losses	30,633	28,346	91,152	85,473
Non-Interest Income
Net gains on sale of investment securities	0	2,668	4,276	3,513
Service charges	7,415	6,842	21,219	19,709
Bankcard revenue	4,291	4,216	12,804	12,373
Trust and investment management fee income	1,471	1,329	4,469	3,976
Bank owned life insurance	774	846	2,972	2,374
Other income	660	846	2,303	2,510
Total Non-Interest Income	14,611	16,747	48,043	44,455
Non-Interest Expense
Salaries and employee benefits	12,876	12,993	38,899	38,456
Occupancy and equipment	2,916	2,759	8,710	8,303
Depreciation	1,450	1,585	4,486	4,719
FDIC insurance expense	328	508	1,031	1,485
Advertising	689	667	2,203	2,161
Bankcard expenses	1,051	1,188	2,964	3,143
Postage, delivery, and statement mailings	517	517	1,576	1,588
Office supplies	377	325	1,082	1,044
Legal and professional fees	504	869	1,393	1,671
Telecommunications	494	459	1,470	1,318
Repossessed asset losses, net of expenses	107	305	589	646
Other expenses	3,000	3,109	8,683	9,173
Total Non-Interest Expense	24,309	25,284	73,086	73,707
Income Before Income Taxes	20,935	19,809	66,109	56,221
Income tax expense	7,003	6,577	21,463	18,745
Net Income Available to Common Shareholders	13,932	13,232	44,646	37,476
Total Comprehensive Income	$ 14,240	$ 12,449	$ 47,881	$ 42,562
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Average common shares outstanding, basic (in shares)	15,485	14,899	15,391	14,902
Effect of dilutive securities (in shares)	20	11	24	11
Average common shares outstanding, diluted (in shares)	15,505	14,910	15,415	14,913
Earnings Per Share [Abstract]
Basic earnings per common share (in dollars per share)	$ 0.89	$ 0.88	$ 2.87	$ 2.48
Diluted earnings per common share (in dollars per share)	0.89	0.88	2.86	2.48
Dividends declared per common share (in dollars per share)	$ 0.44	$ 0.43	$ 1.32	$ 1.29