ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022
Activity in accumulated other comprehensive loss [Roll Forward]
Balance	$ 136,730	$ 135,785	$ 125,040	$ 127,134	$ 134,130	$ 150,911	$ 125,040	$ 150,911
Current period other comprehensive income (loss)	(4,999)	(3,690)	6,013	(18,492)	(10,641)	(19,963)	(2,676)	(49,096)
Balance	136,486	136,730	135,785	113,360	127,134	134,130	136,486	113,360
Accumulated Other Comprehensive Income (Loss) [Member]
Activity in accumulated other comprehensive loss [Roll Forward]
Balance	(44,205)	(40,515)	(46,528)	(34,801)	(24,160)	(4,197)	(46,528)	(4,197)
Current period other comprehensive income (loss)	(4,999)	(3,690)	6,013	(18,492)	(10,641)	(19,963)	(2,676)	(49,096)
Balance	(49,204)	(44,205)	(40,515)	(53,293)	(34,801)	(24,160)	(49,204)	(53,293)
Unrealized Gains (Losses) on Securities [Member]
Activity in accumulated other comprehensive loss [Roll Forward]
Balance	(43,950)		(46,273)	(33,368)		(2,764)	(46,273)	(2,764)
Current period other comprehensive income (loss)	(4,999)			(18,492)			(2,676)	(49,096)
Balance	(48,949)	(43,950)		(51,860)	(33,368)		(48,949)	(51,860)
Officers' Retirement Plan [Member]
Activity in accumulated other comprehensive loss [Roll Forward]
Balance	(308)		(308)	(1,420)		(1,420)	(308)	(1,420)
Current period other comprehensive income (loss)	0			0			0	0
Balance	(308)	(308)		(1,420)	(1,420)		(308)	(1,420)
Directors' Retirement Plan [Member]
Activity in accumulated other comprehensive loss [Roll Forward]
Balance	53		$ 53	(13)		$ (13)	53	(13)
Current period other comprehensive income (loss)	0			0			0	0
Balance	$ 53	$ 53		$ (13)	$ (13)		$ 53	$ (13)