REINSURANCE (Premiums Written and Earned) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Net Premiums Written
Direct	$ 196,285	$ 205,378	$ 370,492	$ 378,340
Ceded	(116,934)	(60,751)	(195,083)	(74,517)
Total premiums written	79,351	144,627	175,409	303,823
Net Premiums Earned
Direct	178,478	179,896	357,480	355,470
Ceded	(142,997)	(68,418)	(282,254)	(138,082)
Net premiums earned	$ 35,481	$ 111,478	$ 75,226	$ 217,388