Schedule IV - Reinsurance (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Insurance Earned Premiums
Gross Amount	$ 803,289	$ 811,329	$ 815,981
Ceded to Other Companies	73,760	67,584	74,268
Assumed from Other Companies	28,976	30,583	29,365
Net Amount	758,505	774,328	771,078
Property and Casualty Insurance
Insurance Earned Premiums
Gross Amount	803,289	811,329	815,981
Ceded to Other Companies	73,760	67,584	74,268
Assumed from Other Companies	28,976	30,583	29,365
Net Amount	$ 758,505	$ 774,328	$ 771,078
Percentage of Amount Assumed to Net	3.80%	3.90%	3.80%