SCHEDULE IV - REINSURANCE (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Abstract]
Gross Amount	$ 1,167,592	$ 1,199,824	$ 1,155,240
Ceded to Other Companies	163,031	188,729	129,337
Assumed From Other Companies	9,858	10,848	5,085
Net Amount	$ 1,014,419	$ 1,021,943	$ 1,030,988
Percentage of Amount Assumed to Net	1.00%	1.10%	0.50%