Reinsurance (Tables)

3 Months Ended

Mar. 31, 2019

Reinsurance Disclosures [Abstract]

Effect Of Reinsurance And Retrocessional Reinsurance On Premiums Written And Earned

The following tables summarize the effect of reinsurance and retrocessional reinsurance on premiums written and earned.

	Three Months Ended March 31,
	2019									2018
(dollars in thousands)	Direct		Assumed		Ceded			Net Premiums		Direct		Assumed		Ceded			Net Premiums
Underwriting:
Written	$	1,127,388	$	578,097	$	(228,632	)	$	1,476,853	$	1,039,378	$	546,313	$	(251,557	)	$	1,334,134
Earned	1,131,556		287,375		(215,166		)	1,203,765		1,037,935		335,490		(222,523		)	1,150,902
Program services and other:
Written	517,701		31,856		(549,317		)	240		457,824		3,369		(460,525		)	668
Earned	514,952		16,395		(531,135		)	212		422,925		1,452		(424,258		)	119
Consolidated:
Written	1,645,089		609,953		(777,949		)	1,477,093		1,497,202		549,682		(712,082		)	1,334,802
Earned	$	1,646,508	$	303,770	$	(746,301	)	$	1,203,977	$	1,460,860	$	336,942	$	(646,781	)	$	1,151,021