QUARTERLY FINANCIAL DATA (UNAUDITED) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Selected Quarterly Financial Information [Abstract]
Interest Income	$ 19,100	$ 19,308	$ 19,106	$ 19,064	$ 18,268	$ 16,001	$ 15,753	$ 15,799	$ 76,578	$ 65,821	$ 61,990
Net Interest Income	16,633	16,778	16,655	16,835	16,191	14,509	14,419	14,635	66,901	59,754	57,488
Net Income	$ 5,894	$ 6,267	$ 5,859	$ 6,176	$ 5,639	$ 5,021	$ 4,375	$ 5,133	$ 24,196	$ 20,168	$ 14,819
Earnings Per Share, Basic (in dollars per share)	$ 0.40	$ 0.43	$ 0.40	$ 0.42	$ 0.39	$ 0.38	$ 0.33	$ 0.38	$ 1.65	$ 1.48	$ 1.11
Earnings Per Share, Diluted (in dollars per share)	$ 0.40	$ 0.43	$ 0.40	$ 0.42	$ 0.39	$ 0.37	$ 0.32	$ 0.38	$ 1.64	$ 1.47	$ 1.10
Income recognized from deferred interest and discounts on loans that paid off				$ 719				$ 533