RETROCESSION (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019	Dec. 31, 2018
Ceded Credit Risk [Line Items]
Ceded premiums earned	$ 1,000	$ 22,200
Net loss and loss adjustment expenses incurred	75,697	122,865
Loss and loss expenses recovered and recoverable	3,500	26,300
Loss and loss adjustment expenses recoverable			$ 27,531	$ 43,705
Provision for uncollectible losses recoverable	89	$ 0
AM Best, A- Rating
Ceded Credit Risk [Line Items]
Loss and loss adjustment expenses recoverable	5,200		6,400
Unsecured | Unrated
Ceded Credit Risk [Line Items]
Loss and loss adjustment expenses recoverable	17,900		21,200
Secured | Unrated
Ceded Credit Risk [Line Items]
Loss and loss adjustment expenses recoverable	$ 17,400		$ 20,000