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Reinsurance (Tables) | 12 Months Ended
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Dec. 31, 2018
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Abstract] |
Schedule of Effect of Reinsurance and Retrocessional Activity on Premiums Written and Earned and on Net Claims and Claim Expenses Incurred | The following table sets forth the effect of reinsurance and retrocessional activity on premiums written and earned and on net claims and claim expenses incurred:
| Year ended December 31, | 2018 |  | 2017 |  | 2016 |
| Premiums written |  |  |  |  |  |
| Direct | $ | 337,587 |  |  | $ | 290,730 |  |  | $ | 208,282 |  |
| Assumed | 2,972,840 |  |  | 2,506,810 |  |  | 2,166,294 |  |
| Ceded | (1,178,525 | ) |  | (926,215 | ) |  | (839,264 | ) |
| Net premiums written | $ | 2,131,902 |  |  | $ | 1,871,325 |  |  | $ | 1,535,312 |  |
| Premiums earned |  |  |  |  |  |
| Direct | $ | 292,219 |  |  | $ | 244,285 |  |  | $ | 157,112 |  |
| Assumed | 2,779,796 |  |  | 2,307,219 |  |  | 1,874,993 |  |
| Ceded | (1,095,886 | ) |  | (833,929 | ) |  | (628,675 | ) |
| Net premiums earned | $ | 1,976,129 |  |  | $ | 1,717,575 |  |  | $ | 1,403,430 |  |
| Claims and claim expenses |  |  |  |  |  |
| Gross claims and claim expenses incurred | $ | 2,578,536 |  |  | $ | 3,420,388 |  |  | $ | 710,651 |  |
| Claims and claim expenses recovered | (1,458,518 | ) |  | (1,558,960 | ) |  | (179,820 | ) |
| Net claims and claim expenses incurred | $ | 1,120,018 |  |  | $ | 1,861,428 |  |  | $ | 530,831 |  |

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- Definition Tabular disclosure of the effects of reinsurance, for example, but not limited to, disclosure of direct, assumed, and ceded insurance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 605 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547 + Details
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