ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Activity in accumulated other comprehensive income (loss) [Roll Forward]
Balance	$ 150,657	$ 132,915
Current period other comprehensive income (loss)	(4,172)	5,069
Balance	149,799	140,793
Accumulated Other Comprehensive Income (Loss) [Member]
Activity in accumulated other comprehensive income (loss) [Roll Forward]
Balance	5,038	134
Current period other comprehensive income (loss)	(4,172)	5,069
Balance	866	5,203
Unrealized Gains (Losses) on Securities [Member]
Activity in accumulated other comprehensive income (loss) [Roll Forward]
Balance	7,196	1,561
Current period other comprehensive income (loss)	(4,172)	5,069
Balance	3,024	6,630
Officers' Retirement Plan [Member]
Activity in accumulated other comprehensive income (loss) [Roll Forward]
Balance	(2,105)	(1,411)
Current period other comprehensive income (loss)	0	0
Balance	(2,105)	(1,411)
Directors' Retirement Plan [Member]
Activity in accumulated other comprehensive income (loss) [Roll Forward]
Balance	(53)	(16)
Current period other comprehensive income (loss)	0	0
Balance	$ (53)	$ (16)