XML 60 R49.htm IDEA: XBRL DOCUMENT v3.10.0.1
Reinsurance (Effect of Reinsurance and Retrocessional Activity on Premiums Written and Earned and on Net Claims and Claim Expenses) (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Premiums written        
Direct $ 90,573 $ 67,805 $ 175,740 $ 141,213
Assumed 886,770 759,610 1,961,255 1,608,292
Ceded (372,834) (271,670) (869,442) (649,624)
Net premiums written 604,509 555,745 1,267,553 1,099,881
Premiums earned        
Direct 69,904 56,357 139,936 114,525
Assumed 601,735 520,347 1,207,218 1,019,346
Ceded (242,254) (194,439) (477,487) (385,561)
Net premiums earned 429,385 382,265 869,667 748,310
Claims and claim expenses        
Gross claims and claim expenses incurred 76,945 189,903 302,687 441,707
Claims and claim expenses recovered (16,778) (47,316) (70,817) (106,039)
Net claims and claim expenses incurred $ 60,167 $ 142,587 $ 231,870 $ 335,668