Reinsurance (Schedule of Reinsurance Ceded and Recoveries) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Premium Written :
Direct	$ 734,800	$ 836,797
Assumed	8,568	7,034
Ceded premiums written	(304,395)	(347,279)
Net premiums written	438,973	496,552
Premium Earned:
Direct	803,034	748,203
Assumed	8,454	4,763
Ceded earned premiums	(329,690)	(316,089)
Net premiums earned	481,798	436,877
Reinsurance recoveries	$ 260,826	$ 211,768

Amount of earned premiums assumed from other entities.

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