REINSURANCE (Ceded and Assumed Reinsurance) (Details) - Property and casualty business - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Reinsurance [Line Items]
Ceded premiums written	$ 88,339	$ 74,511	$ 66,800
Ceded premiums earned	84,924	72,023	63,487
Loss and loss settlement expenses ceded	185,653	28,447	22,317
Assumed premiums written	34,371	27,869	16,761
Assumed premiums earned	33,679	25,412	16,957
Loss and loss settlement expenses assumed	$ 29,141	$ 14,813	$ (3,954)