Condensed Consolidated Statements of Income and Comprehensive Income (unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Interest income:
Interest and fees on loans, including loans held for sale	$ 33,255	$ 32,669	$ 66,579	$ 64,844
Interest and dividends on securities
Taxable	2,065	2,408	4,158	4,963
Tax exempt	658	682	1,350	1,353
Interest and dividends on Federal Reserve Bank and Federal Home Loan Bank stock	252	250	506	504
Other, including interest on federal funds sold	144	74	308	144
Total interest income	36,374	36,083	72,901	71,808
Interest expense:
Interest on deposits	2,677	2,359	5,248	4,665
Interest on repurchase agreements and other short-term borrowings	284	242	548	458
Interest on advances from Federal Home Loan Bank	4	10	48	24
Interest on long-term debt	350	290	674	574
Total interest expense	3,315	2,901	6,518	5,721
Net interest income	33,059	33,182	66,383	66,087
Provision for loan losses	1,873	2,319	3,638	4,220
Net interest income after provision for loan losses	31,186	30,863	62,745	61,867
Noninterest income:
Service charges on deposit accounts	6,272	6,046	12,117	11,628
Gains on sales of loans, net	446	823	762	1,113
Trust and wealth management income	2,396	2,366	4,671	4,605
Loan related fees	739	1,242	1,350	2,106
Bank owned life insurance	538	521	1,068	1,042
Brokerage revenue	317	367	680	663
Securities gains (losses)	(4)	(14)	64	130
Other noninterest income	1,065	877	2,028	1,677
Total noninterest income	11,769	12,228	22,740	22,964
Noninterest expense:
Officer salaries and employee benefits	2,964	2,919	6,057	5,891
Other salaries and employee benefits	11,358	10,703	22,398	21,376
Occupancy, net	1,966	1,908	4,023	3,995
Equipment	729	772	1,444	1,549
Data processing	1,559	1,695	3,128	3,627
Bank franchise tax	1,400	1,276	2,799	2,544
Legal fees	502	526	982	1,099
Professional fees	483	548	922	973
Advertising and marketing	580	645	1,209	1,212
FDIC insurance	576	586	1,159	1,192
Other real estate owned provision and expense	468	752	1,019	1,236
Repossession expense	424	256	639	600
Amortization of limited partnership investments	997	718	1,532	971
Other noninterest expense	3,186	3,009	6,123	5,866
Total noninterest expense	27,192	26,313	53,434	52,131
Income before income taxes	15,763	16,778	32,051	32,700
Income taxes	4,197	4,376	8,883	9,360
Net income	11,566	12,402	23,168	23,340
Unrealized holding gains (losses) on securities available-for-sale:
Unrealized holding gains (losses) arising during the period	2,321	(5,385)	8,124	62
Less: Reclassification adjustments for realized gains (losses) included in net income	(4)	(14)	64	130
Tax expense (benefit)	814	(1,880)	2,821	(24)
Other comprehensive income (loss), net of tax	1,511	(3,491)	5,239	(44)
Comprehensive income	$ 13,077	$ 8,911	$ 28,407	$ 23,296
Basic earnings per share (in dollars per share)	$ 0.66	$ 0.71	$ 1.32	$ 1.34
Diluted earnings per share (in dollars per share)	$ 0.66	$ 0.71	$ 1.32	$ 1.34
Weighted average shares outstanding-basic (in shares)	17,530	17,421	17,521	17,411
Weighted average shares outstanding-diluted (in shares)	17,542	17,465	17,538	17,458
Dividends declared per share (in dollars per share)	$ 0.310	$ 0.300	$ 0.620	$ 0.600