CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Interest income:
Loans, including fees	$ 86,346	$ 79,284	$ 68,259
Securities, taxable	13,724	10,432	6,707
Securities, exempt from Federal tax	2,256	2,290	2,183
Other investments and interest-bearing deposits in other financial institutions	4,585	2,425	1,594
Total interest income	106,911	94,431	78,743
Interest expense:
Deposits	3,991	3,199	2,403
Subordinated debt	1,394
Short-term borrowings	2	12	19
Total interest expense	5,387	3,211	2,422
Net interest income before provision for loan losses	101,524	91,220	76,321
Provision for loan losses	99	1,237	32
Net interest income after provision for loan losses	101,425	89,983	76,289
Noninterest income:
Service charges and fees on deposit accounts	3,231	3,116	2,803
Increase in cash surrender value of life insurance	1,666	1,747	1,697
Gain on sales of SBA loans	1,108	796	843
Servicing income	973	1,398	1,143
Gain on proceeds from company-owned life insurance		1,119
Gain (loss) on sales of securities	(6)	1,099	642
Other	2,640	2,350	1,857
Total noninterest income	9,612	11,625	8,985
Noninterest expense:
Salaries and employee benefits	37,029	34,660	35,146
Occupancy and equipment	4,578	4,378	4,300
Professional fees	2,982	3,471	1,828
Other	16,149	15,130	17,399
Total noninterest expense	60,738	57,639	58,673
Income before income taxes	50,299	43,969	26,601
Income tax expense	26,471	16,588	10,104
Net income	23,828	27,381	16,497
Dividends on preferred stock		(1,512)	(1,792)
Net income available to common shareholders	23,828	25,869	14,705
Undistributed earnings allocated to Series C preferred stock		(1,278)	(912)
Distributed and undistributed earnings allocated to common shareholders	$ 23,828	$ 24,591	$ 13,793
Earnings per common share:
Basic (in dollars per share)	$ 0.63	$ 0.72	$ 0.48
Diluted (in dollars per share)	$ 0.62	$ 0.72	$ 0.48