LOSS AND LOSS ADJUSTMENT RESERVES - (Narrative) (Details) - USD ($) $ in Thousands		1 Months Ended		12 Months Ended
	Feb. 28, 2021	Jul. 31, 2017	Jul. 31, 2016	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Liability for Catastrophe Claims [Line Items]
Current year				$ 226,537	$ 358,952	$ 262,118
Federated National Reinsurance Programs | Florida
Liability for Catastrophe Claims [Line Items]
Current year				$ 6,300	$ 18,400	$ 13,500
Quota Share Treaties | Property Insurance Product Line | Florida
Liability for Catastrophe Claims [Line Items]
Percentage of quota share reinsurance treaty	30.00%	10.00%	30.00%
Settlement adjustment	$ 11,200