PARENT COMPANY FINANCIAL STATEMENTS, Condensed Statement of Operations (Details) - USD ($) $ 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
Income [Abstract]
Interest and dividend income	$ 15,374	$ 15,134	$ 16,373	$ 15,109	$ 14,600	$ 14,865	$ 14,666	$ 14,210	$ 61,990	$ 58,341	$ 52,411
Expenses [Abstract]
Interest expense									4,502	4,643	4,031
Salaries and employee benefits									19,355	19,805	16,949
Occupancy and equipment expenses									5,999	6,266	5,201
Professional fees									975	784	664
Other expenses									4,059	4,274	3,773
Income before income taxes									23,426	18,944	19,349
Income tax (benefit)									8,607	6,770	6,903
Net income	$ 3,769	$ 3,467	$ 3,919	$ 3,664	$ 3,407	$ 3,164	$ 2,624	$ 2,979	14,819	12,174	12,446
Parent Company [Member]
Income [Abstract]
Dividends from subsidiaries									12,565	10,840	13,390
Interest and dividend income									12	9	2
Other income									2,126	1,766	1,565
Total income									14,703	12,615	14,957
Expenses [Abstract]
Interest expense									285	401	494
Salaries and employee benefits									3,399	2,744	2,703
Occupancy and equipment expenses									299	302	268
Professional fees									303	307	264
Other expenses									682	917	523
Total expenses									4,968	4,671	4,252
Income before income taxes									9,735	7,944	10,705
Income tax (benefit)									(1,012)	(988)	(875)
Income before equity in undistributed income of subsidiaries									10,747	8,932	11,580
Equity in undistributed income of subsidiaries									4,072	3,242	866
Net income									$ 14,819	$ 12,174	$ 12,446