CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
INTEREST INCOME:
Interest and fees on loans	$ 128,858	$ 86,822	$ 56,826
Interest and dividends on securities:
Taxable interest and dividends	14,244	9,020	6,341
Tax exempt interest	3,566	2,939	2,350
Interest on federal funds sold	7	206	390
Interest on deposits in banks	1,854	991	162
Total interest income	148,529	99,978	66,069
INTEREST EXPENSE:
Interest on deposits	19,763	10,785	5,261
Interest on borrowed funds	6,960	4,306	1,648
Total interest expense	26,723	15,091	6,909
Net interest income	121,806	84,887	59,160
Provision for loan losses	3,738	2,120	506
Net interest income after provision for loan losses	118,068	82,767	58,654
NON-INTEREST INCOME:
Interchange fees	8,024	5,247	3,758
Secondary market mortgage income	5,988	4,048	4,502
Bank owned life insurance income	1,414	937	739
Gain (loss) on sale of premises	13	(137)	(22)
Securities gains (losses)	122	334	(16)
Gain (loss) on sale of other real estate	(144)	60	(199)
Financial assistance and bank enterprise awards	947	2,098	0
Other	1,698	1,186	1,376
Total non-interest income	26,947	20,561	14,363
NON-INTEREST EXPENSE
Salaries	41,065	33,640	25,828
Employee benefits	6,610	4,662	4,720
Occupancy	8,775	6,818	4,828
Furniture and equipment	1,838	1,575	1,225
Supplies and printing	890	846	640
Professional and consulting fees	6,449	5,381	6,757
Marketing and public relations	859	508	406
FDIC and OCC assessments	632	1,382	1,252
ATM expense	2,821	3,241	1,188
Bank communications	1,367	2,014	1,296
Data processing	1,285	6,931	1,039
Other	15,978	9,313	6,267
Total non-interest expense	88,569	76,311	55,446
Income before income taxes	56,446	27,017	17,571
Income taxes	12,701	5,792	6,955
Net income available to common stockholders	$ 43,745	$ 21,225	$ 10,616
Earnings per share:
Basic	$ 2.57	$ 1.63	$ 1.12
Diluted	$ 2.55	$ 1.62	$ 1.11
Service charges on deposit accounts
NON-INTEREST INCOME:
Other income	$ 7,838	$ 5,792	$ 3,601
Other service charges and fees
NON-INTEREST INCOME:
Other income	$ 1,047	$ 996	$ 624