ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Amounts reclassified out of AOCI) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Net investment gains	$ 11	$ 1,430	$ 752	$ 988
Tax expense	165	205	266	1,737
Net Loss	$ (644)	$ (778)	(961)	(6,364)	$ (8,619)
Amounts Reclassified from Accumulated Other Comprehensive Income | Unrealized Gains (Losses) on Available-for-Sale Securities
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Net investment gains			106	1,345
Total before tax			106	1,345
Tax expense			(22)	(282)
Net Loss			$ 84	$ 1,063