ACCUMULATED OTHER COMPREHENSIVE INCOME, RECLASSIFICATION OF AOCI (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Realized gain (loss) on sales of securities									$ 41	$ 8	$ (233)
Less provision (benefit) for income taxes	$ (1,238)	$ (961)	$ (973)	$ (941)	$ (1,133)	$ (847)	$ (486)	$ (483)	(4,113)	(2,949)	$ (4,272)
Reclassification adjustment, net of taxes									(32)	(6)
Unrealized Gains and Losses on Available-for-Sale Securities
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification adjustment, net of taxes									(32)	(6)
Unrealized Gains and Losses on Available-for-Sale Securities | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Realized gain (loss) on sales of securities									41	(8)
Less provision (benefit) for income taxes									9	(2)
Reclassification adjustment, net of taxes									$ 32	$ (6)