Reinsurance (Tables)

6 Months Ended

Jun. 30, 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.

	Quarter Ended June 30,
	2019									2018
(dollars in thousands)	Direct		Assumed		Ceded			Net Premiums		Direct		Assumed		Ceded			Net Premiums
Underwriting:
Written	$	1,323,128	$	268,837	$	(286,978	)	$	1,304,987	$	1,182,683	$	259,960	$	(262,781	)	$	1,179,862
Earned	1,159,544		331,842		(292,374		)	1,199,012		1,070,248		316,718		(239,152		)	1,147,814
Program services and other:
Written	652,716		2,466		(654,531		)	651		549,630		5,160		(554,046		)	744
Earned	538,131		12,878		(550,560		)	449		470,824		2,286		(472,740		)	370
Consolidated:
Written	1,975,844		271,303		(941,509		)	1,305,638		1,732,313		265,120		(816,827		)	1,180,606
Earned	$	1,697,675	$	344,720	$	(842,934	)	$	1,199,461	$	1,541,072	$	319,004	$	(711,892	)	$	1,148,184

	Six Months Ended June 30,
	2019									2018
(dollars in thousands)	Direct		Assumed		Ceded			Net Premiums		Direct		Assumed		Ceded			Net Premiums
Underwriting:
Written	$	2,450,516	$	846,934	$	(515,610	)	$	2,781,840	$	2,222,061	$	806,273	$	(514,338	)	$	2,513,996
Earned	2,291,100		619,217		(507,540		)	2,402,777		2,108,183		652,208		(461,665		)	2,298,726
Program services and other:
Written	1,170,417		34,322		(1,203,848		)	891		1,007,454		8,529		(1,014,571		)	1,412
Earned	1,053,083		29,273		(1,081,695		)	661		893,749		3,738		(897,008		)	479
Consolidated:
Written	3,620,933		881,256		(1,719,458		)	2,782,731		3,229,515		814,802		(1,528,909		)	2,515,408
Earned	$	3,344,183	$	648,490	$	(1,589,235	)	$	2,403,438	$	3,001,932	$	655,946	$	(1,358,673	)	$	2,299,205