Condensed Consolidated Statements of Income and Comprehensive 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, including loans held for sale	$ 36,288	$ 33,593	$ 104,643	$ 100,172
Interest and dividends on securities
Taxable	2,198	2,030	6,458	6,188
Tax exempt	741	653	2,211	2,003
Interest and dividends on Federal Reserve Bank and Federal Home Loan Bank stock	308	251	867	757
Other, including interest on federal funds sold	309	152	844	460
Total interest income	39,844	36,679	115,023	109,580
Interest expense:
Interest on deposits	3,754	2,799	9,876	8,047
Interest on repurchase agreements	466	288	1,215	836
Interest on advances from Federal Home Loan Bank	226	3	394	51
Interest on long-term debt	428	362	1,238	1,036
Total interest expense	4,874	3,452	12,723	9,970
Net interest income	34,970	33,227	102,300	99,610
Provision for loan losses	666	2,191	4,659	5,829
Net interest income after provision for loan losses	34,304	31,036	97,641	93,781
Noninterest income:
Service charges on deposit accounts	6,499	6,563	18,658	18,680
Gains on sales of loans, net	390	595	897	1,357
Trust and wealth management income	2,534	2,440	7,769	7,111
Loan related fees	792	1,260	2,570	2,610
Bank owned life insurance	583	560	1,633	1,628
Brokerage revenue	297	387	1,032	1,067
Securities gains	48	458	58	522
Other noninterest income	1,059	923	3,475	2,951
Total noninterest income	12,202	13,186	36,092	35,926
Noninterest expense:
Officer salaries and employee benefits	2,933	3,090	8,860	9,147
Other salaries and employee benefits	11,146	11,126	34,187	33,524
Occupancy, net	2,043	2,012	6,042	6,035
Equipment	741	733	2,275	2,177
Data processing	1,772	1,601	5,318	4,729
Bank franchise tax	1,205	1,492	4,246	4,291
Legal fees	429	455	1,256	1,437
Professional fees	478	473	1,525	1,395
Advertising and marketing	705	674	2,098	1,883
FDIC insurance	316	469	923	1,628
Other real estate owned provision and expense	1,313	873	4,056	1,892
Repossession expense	269	272	697	911
Amortization of limited partnership investments	605	546	1,814	2,078
Other noninterest expense	2,977	2,871	8,845	8,994
Total noninterest expense	26,932	26,687	82,142	80,121
Income before income taxes	19,574	17,535	51,591	49,586
Income taxes	5,811	5,223	15,010	14,106
Net income	13,763	12,312	36,581	35,480
Unrealized holding gains (losses) on securities available-for-sale:
Unrealized holding gains (losses) arising during the period	(522)	(2,374)	2,223	5,750
Less: Reclassification adjustments for realized gains included in net income	48	458	58	522
Tax expense (benefit)	(199)	(991)	758	1,830
Other comprehensive income (loss), net of tax	(371)	(1,841)	1,407	3,398
Comprehensive income	$ 13,392	$ 10,471	$ 37,988	$ 38,878
Basic earnings per share (in dollars per share)	$ 0.78	$ 0.70	$ 2.08	$ 2.02
Diluted earnings per share (in dollars per share)	$ 0.78	$ 0.70	$ 2.07	$ 2.02
Weighted average shares outstanding-basic (in shares)	17,633	17,554	17,625	17,532
Weighted average shares outstanding-diluted (in shares)	17,653	17,569	17,645	17,548
Dividends declared per share (in dollars per share)	$ 0.33	$ 0.32	$ 0.97	$ 0.94