ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2021	Sep. 30, 2020
Activity in accumulated other comprehensive income (loss) [Roll Forward]
Balance	$ 152,474	$ 149,799	$ 150,657	$ 144,886	$ 140,793	$ 132,915	$ 150,657	$ 132,915
Current period other comprehensive income (loss)	(1,133)	146	(4,172)	(89)	1,239	5,069	(5,159)	6,219
Balance	154,544	152,474	149,799	148,370	144,886	140,793	154,544	148,370
Accumulated Other Comprehensive Income (Loss) [Member]
Activity in accumulated other comprehensive income (loss) [Roll Forward]
Balance	1,012	866	5,038	6,442	5,203	134	5,038	134
Current period other comprehensive income (loss)	(1,133)	146	(4,172)	(89)	1,239	5,069
Balance	(121)	1,012	866	6,353	6,442	5,203	(121)	6,353
Unrealized Gains on Securities [Member]
Activity in accumulated other comprehensive income (loss) [Roll Forward]
Balance	3,170		7,196	7,869		1,561	7,196	1,561
Current period other comprehensive income (loss)	(1,133)			(89)			(5,159)	6,219
Balance	2,037	3,170		7,780	7,869		2,037	7,780
Officers' Retirement Plan [Member]
Activity in accumulated other comprehensive income (loss) [Roll Forward]
Balance	(2,105)		(2,105)	(1,411)		(1,411)	(2,105)	(1,411)
Current period other comprehensive income (loss)	0			0			0	0
Balance	(2,105)	(2,105)		(1,411)	(1,411)		(2,105)	(1,411)
Directors' Retirement Plan [Member]
Activity in accumulated other comprehensive income (loss) [Roll Forward]
Balance	(53)		$ (53)	(16)		$ (16)	(53)	(16)
Current period other comprehensive income (loss)	0			0			0	0
Balance	$ (53)	$ (53)		$ (16)	$ (16)		$ (53)	$ (16)