CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Interest income
Interest and fees on loans	$ 107,368	$ 103,723	$ 100,786
Securities	5,347	3,801	2,814
Federal Funds and interest-bearing deposits	3,944	2,427	1,925
Total interest income	116,659	109,951	105,525
Interest expense
Deposits	7,652	7,073	6,501
Repurchase agreements	5	5	4
Note payable	906	1,061	932
Junior subordinated debt	322	266	217
Total interest expense	8,885	8,405	7,654
Net interest income (expense)	107,774	101,546	97,871
Provision (recapture) for loan losses	(338)	4,575	6,950
Net interest income after provision (recapture) for loan losses	108,112	96,971	90,921
Noninterest income
Deposit account service charges	5,800	6,538	6,912
Net gain on sale of assets	1,524	1,922	783
Gain on redemption of junior subordinated debt			1,025
Card interchange fees	3,453	3,352	3,331
Earnings on bank-owned life insurance	1,580	1,356	1,357
Other	1,847	2,581	1,559
Total noninterest income	14,204	15,749	14,967
Noninterest expense
Salaries and employee benefits	48,573	44,239	41,601
Net occupancy expense	9,151	10,100	9,844
Regulatory fees	2,176	2,300	2,206
Data processing	2,629	2,484	2,416
Printing, stationery and office	1,480	1,537	1,573
Amortization of intangibles	1,079	1,167	1,305
Professional and director fees	3,105	2,481	2,462
Correspondent bank and customer related transaction expenses	286	320	325
Loan processing costs	461	509	619
Advertising, marketing and business development	1,461	789	925
Repossessed real estate and other asset expense	609	318	228
Security and protection expense	1,355	1,718	1,619
Merger expense			1,374
Telephone and communications	1,316	1,444	1,386
Other expenses	4,611	4,096	3,078
Total noninterest Expense	78,292	73,502	70,961
Net income before income tax expense	44,024	39,218	34,927
Income tax expense	16,453	12,010	10,791
Net income	$ 27,571	$ 27,208	$ 24,136
Earnings per common share
Basic	$ 1.23	$ 1.23	$ 1.07
Diluted	$ 1.22	$ 1.22	$ 1.06