v3.2.0.727

Reinsurance (Effect Of Reinsurance And Retrocessional Reinsurance On Premiums Written And Earned) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Reinsurance Disclosures [Abstract]
Direct premiums written	$ 951,885	$ 976,446	$ 1,753,465	$ 1,771,757
Direct premiums earned	875,376	852,867	1,719,946	1,681,159
Assumed premiums written	313,901	366,932	764,794	931,378
Assumed premiums earned	304,324	336,617	617,159	684,316
Ceded premiums written	(231,442)	(259,047)	(448,485)	(479,493)
Ceded premiums earned	(222,143)	(223,885)	(435,898)	(450,501)
Net premiums written	1,034,344	1,084,331	2,069,774	2,223,642
Net premiums earned	$ 957,557	$ 965,599	$ 1,901,207	$ 1,914,974

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