Reinsurance (Tables)

9 Months Ended

Sep. 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 September 30,
	2019									2018
(dollars in thousands)	Direct		Assumed		Ceded			Net Premiums		Direct		Assumed		Ceded			Net Premiums
Underwriting:
Written	$	1,358,243	$	282,506	$	(271,094	)	$	1,369,655	$	1,207,605	$	274,898	$	(266,788	)	$	1,215,715
Earned	1,219,103		327,431		(246,965		)	1,299,569		1,113,763		313,378		(242,120		)	1,185,021
Program services and other:
Written	584,196		39,547		(623,014		)	729		529,958		31,310		(560,712		)	556
Earned	576,576		20,399		(596,512		)	463		480,694		13,046		(493,438		)	302
Consolidated:
Written	1,942,439		322,053		(894,108		)	1,370,384		1,737,563		306,208		(827,500		)	1,216,271
Earned	$	1,795,679	$	347,830	$	(843,477	)	$	1,300,032	$	1,594,457	$	326,424	$	(735,558	)	$	1,185,323

	Nine Months Ended September 30,
	2019									2018
(dollars in thousands)	Direct		Assumed		Ceded			Net Premiums		Direct		Assumed		Ceded			Net Premiums
Underwriting:
Written	$	3,808,759	$	1,129,440	$	(786,704	)	$	4,151,495	$	3,429,666	$	1,081,171	$	(781,126	)	$	3,729,711
Earned	3,510,203		946,648		(754,505		)	3,702,346		3,221,946		965,586		(703,785		)	3,483,747
Program services and other:
Written	1,754,613		73,869		(1,826,862		)	1,620		1,537,412		39,839		(1,575,283		)	1,968
Earned	1,629,659		49,672		(1,678,207		)	1,124		1,374,443		16,784		(1,390,446		)	781
Consolidated:
Written	5,563,372		1,203,309		(2,613,566		)	4,153,115		4,967,078		1,121,010		(2,356,409		)	3,731,679
Earned	$	5,139,862	$	996,320	$	(2,432,712	)	$	3,703,470	$	4,596,389	$	982,370	$	(2,094,231	)	$	3,484,528