ACCUMULATED OTHER COMPREHENSIVE INCOME, RECLASSIFICATION OF AOCI (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Realized gain on sales of securities									$ 8	$ (233)	$ (1,082)
Less provision for income taxes	$ (1,133)	$ (847)	$ (486)	$ (483)	$ (1,017)	$ (1,040)	$ (1,027)	$ (1,188)	(2,949)	(4,272)	$ (4,443)
Reclassification adjustment, net of taxes									(6)	152
Unrealized Gains and Losses on Available-for-Sale Securities
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification adjustment, net of taxes									(6)	152
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 on sales of securities									(8)	233
Less provision for income taxes									(2)	81
Reclassification adjustment, net of taxes									$ (6)	$ 152