UNAUDITED QUARTERLY FINANCIAL DATA (Selected Consolidated Quarterly Financial Data) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended												12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016		Sep. 30, 2016		Jun. 30, 2016		Mar. 31, 2016		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Quarterly Financial Information (Unaudited)
Interest income	$ 17,864	$ 16,401	$ 14,047	$ 12,441	$ 11,919		$ 11,337		$ 10,970		$ 9,929		$ 60,753	$ 44,155	$ 32,682
Interest expense	2,293	2,437	2,281	1,660	1,492		1,519		1,598		1,480		8,671	6,089	5,260
Net interest income	15,571	13,964	11,766	10,781	10,427		9,818		9,372		8,449		52,082	38,066	27,422
Provision for loan losses	3,499	1,200	1,790	570	5,900		350		1,250		560		7,059	8,060	2,015
Net interest income after provision for loan losses	12,072	12,764	9,976	10,211	4,527		9,468		8,122		7,889		45,023	30,006	25,407
Non-interest income	6,249	2,233	1,573	1,245	1,288		1,321		1,658		1,156
Non-interest expense	9,780	8,590	7,141	7,234	6,199		8,267		6,662		6,243		32,745	27,371	23,077
Income before income taxes	8,541	6,407	4,408	4,222	(384)		2,522		3,118		2,802		23,578	8,058	6,828
Income tax expense	5,216	2,562	1,757	1,674	(433)		1,072		1,268		1,138		11,209	3,045	2,559
Net income per consolidated statements of income	$ 3,325	$ 3,845	$ 2,651	$ 2,548	$ 49		$ 1,450		$ 1,850		$ 1,664		$ 12,369	$ 5,013	$ 4,269
Basic earnings per share (in dollars per share)	$ 0.50	$ 0.83	$ 0.57	$ 0.55	$ 0.01		$ (0.50)		$ 0.59		$ 0.53		$ 2.40	$ 0.43	$ 1.54
Diluted earnings per share (in dollars per share)	$ 0.49	$ 0.82	$ 0.57	$ 0.55	$ 0.01	[1]	$ (0.50)	[1]	$ 0.58	[1]	$ 0.53	[1]	$ 2.34	$ 0.43	$ 1.54

[1] The EPS for September 30, 2016 was negative despite having a positive Net Income due to dividends paid out to preferred shareholders in that quarter.