SEGMENT REPORTING Geographic Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenue from External Customer [Line Items]
Gross premiums written	$ 135,596	$ 110,607	$ 362,072	$ 425,507
Gross premiums by geographical area as a percentage of total gross premiums	100.00%	100.00%	100.00%	100.00%
U.S. and Caribbean
Revenue from External Customer [Line Items]
Gross premiums written	$ 110,798	$ 89,811	$ 291,511	$ 358,099
Gross premiums by geographical area as a percentage of total gross premiums	81.70%	81.20%	80.50%	84.10%
Worldwide
Revenue from External Customer [Line Items]
Gross premiums written	$ 22,738	$ 18,450	$ 66,150	$ 64,590
Gross premiums by geographical area as a percentage of total gross premiums	16.80%	16.70%	18.30%	15.20%
Europe
Revenue from External Customer [Line Items]
Gross premiums written	$ 0	$ 0	$ 0	$ (13)
Gross premiums by geographical area as a percentage of total gross premiums	0.00%	0.00%	0.00%	0.00%
Asia
Revenue from External Customer [Line Items]
Gross premiums written	$ 2,060	$ 2,346	$ 4,411	$ 2,831
Gross premiums by geographical area as a percentage of total gross premiums	1.50%	2.10%	1.20%	0.70%