ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Activity in accumulated other comprehensive income (loss) [Roll Forward]
Balance			$ 100,044	$ 92,298	$ 92,298
Current period other comprehensive income (loss)	$ (610)	$ 93	(2,421)	67	(1,448)
Balance	103,574		103,574		100,044
Unrealized Gains (Losses) on Securities [Member]
Activity in accumulated other comprehensive income (loss) [Roll Forward]
Balance	(4,808)	(1,658)	(2,997)	(1,678)	(1,678)
Current period other comprehensive income (loss)	(610)	93	(2,421)	113
Balance	(5,418)	(1,565)	(5,418)	(1,565)	(2,997)
Officers' Retirement Plan [Member]
Activity in accumulated other comprehensive income (loss) [Roll Forward]
Balance	(1,403)	(732)	(1,403)	(686)	(686)
Current period other comprehensive income (loss)	0	0	0	(46)
Balance	(1,403)	(732)	(1,403)	(732)	(1,403)
Directors' Retirement Plan [Member]
Activity in accumulated other comprehensive income (loss) [Roll Forward]
Balance	3	14	3	14	14
Current period other comprehensive income (loss)	0	0	0	0
Balance	3	14	3	14	3
Accumulated Other Comprehensive Loss [Member]
Activity in accumulated other comprehensive income (loss) [Roll Forward]
Balance	(6,208)	(2,376)	(4,397)	(2,350)	(2,350)
Current period other comprehensive income (loss)			(2,421)		(1,448)
Balance	$ (6,818)	$ (2,283)	$ (6,818)	$ (2,283)	$ (4,397)