PARENT COMPANY FINANCIAL INFORMATION - CONDENSED STATEMENTS OF INCOME (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income:
Interest and dividends	$ 15,945	$ 15,322	$ 15,957	$ 16,556	$ 16,424	$ 16,329	$ 16,328	$ 16,113	$ 63,780	$ 65,194	$ 54,594
Net gain on sales of securities									221	(41)	(8)
INCOME BEFORE INCOME TAXES	7,025	5,178	6,185	5,772	6,068	5,688	5,701	5,568	24,160	23,025	17,794
Income tax benefit	(1,283)	(928)	(1,128)	(746)	(1,238)	(961)	(973)	(941)	(4,085)	(4,113)	(2,949)
NET INCOME	$ 5,742	$ 4,250	$ 5,057	$ 5,026	$ 4,830	$ 4,727	$ 4,728	$ 4,627	20,075	18,912	14,845
Parent Company
Income:
Dividends from subsidiaries									12,070	18,300	10,383
Interest and dividends									29	31	35
Other Income									147	215	(66)
Total income									12,246	18,546	10,352
Total expenses									1,326	1,369	1,668
INCOME BEFORE INCOME TAXES									10,920	17,177	8,684
Income tax benefit									404	222	341
Equity in undistributed income of subsidiaries									8,751	1,513	5,820
NET INCOME									$ 20,075	$ 18,912	$ 14,845