QUARTERLY RESULTS OF OPERATIONS (UNAUDITED) (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 Disclosure [Abstract]
Interest income	$ 11,610	$ 11,055	$ 10,934	$ 10,864	$ 11,226	$ 10,895	$ 11,008	$ 10,621	$ 44,463	$ 43,750	$ 42,659
Interest expense	953	908	861	877	887	885	883	849	3,599	3,504	3,328
NET INTEREST INCOME	10,657	10,147	10,073	9,987	10,339	10,010	10,125	9,772	40,864	40,246	39,331
Provision for loan losses	(10)	(12)	222	15	55	372	396	90	215	913	1,366
NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES	10,667	10,159	9,851	9,972	10,284	9,638	9,729	9,682	40,649	39,333	37,965
Total non-interest income	2,579	2,659	2,790	2,430	2,615	2,846	2,750	2,642	10,458	10,853	10,123
Total non-interest expenses	8,612	8,672	8,611	7,968	7,908	8,593	8,468	8,292	33,863	33,261	32,392
INCOME BEFORE INCOME TAXES	4,634	4,146	4,030	4,434	4,991	3,891	4,011	4,032	17,244	16,925	15,696
PROVISION FOR INCOME TAXES	1,017	1,040	1,027	1,188	1,337	995	1,043	1,068	4,272	4,443	4,222
NET INCOME	$ 3,617	$ 3,106	$ 3,003	$ 3,246	$ 3,654	$ 2,896	$ 2,968	$ 2,964	$ 12,972	$ 12,482	$ 11,474
Earnings per common share:
Basic (in dollars per share)	$ 0.37	$ 0.31	$ 0.30	$ 0.32	$ 0.37	$ 0.29	$ 0.30	$ 0.30	$ 1.30	$ 1.26	$ 1.18
Diluted (in dollars per share)	$ 0.36	$ 0.31	$ 0.30	$ 0.32	$ 0.37	$ 0.29	$ 0.29	$ 0.30	$ 1.29	$ 1.25	$ 1.17