Reinsurance (Schedule of Reinsurance Ceded and Recoveries) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Premium Written :
Direct	$ 836,797	$ 660,298
Assumed	7,034	2,717
Ceded premiums written	(347,279)	(299,217)
Net premiums written	496,552	363,798
Premium Earned:
Direct	748,203	639,437
Assumed	4,763	2,159
Ceded earned premiums	(316,089)	(278,509)
Net premiums earned	436,877	363,087
Reinsurance recoveries	$ 211,768	$ 199,690

Amount of earned premiums assumed from other entities.

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