ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Amounts reclassified out of AOCI) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Net realized investment gains (losses)	$ 2,120	$ (264)
Tax (expense) or benefit	(153)	(161)
Net Income	2,443	471	$ 779
Amounts Reclassified from Accumulated Other Comprehensive Income | Unrealized Gains and Losses on Available-for-Sale Securities
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Net realized investment gains (losses)	10	86
Total before tax	10	86
Tax (expense) or benefit	(2)	(18)
Net Income	$ 8	$ 68