Reinsurance (Tables)

12 Months Ended

Dec. 31, 2014

Reinsurance Disclosures [Abstract]

Premiums Written And Earned And Incurred Losses And LAE

	Years Ended December 31,
(Dollars in thousands)	2014			2013			2012
Written premiums:
Direct	$	1,227,645		$	1,268,698		$	1,074,206
Assumed		4,521,342			3,949,936			3,236,331
Ceded		(492,084	)		(213,813	)		(229,466	)
Net written premiums	$	5,256,903		$	5,004,821		$	4,081,071
Premiums earned:
Direct	$	1,183,498		$	1,207,833		$	1,054,707
Assumed		4,405,253			3,748,824			3,353,667
Ceded		(419,616	)		(203,114	)		(243,746	)
Net premiums earned	$	5,169,135		$	4,753,543		$	4,164,628
Incurred losses and LAE:
Direct	$	1,100,037		$	1,173,177		$	926,364
Assumed		2,160,663			1,833,055			2,017,526
Ceded		(354,166	)		(205,981	)		(198,625	)
Net incurred losses and LAE	$	2,906,534		$	2,800,251		$	2,745,265