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Reinsurance (Tables) | 12 Months Ended
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Dec. 31, 2021
Reinsurance [Abstract] |
Premiums Written And Earned And Incurred Losses And LAE |
| Years Ended December 31,
(Dollars in thousands) | 2021 |  | 2020 |  | 2019
Written premiums: |  |  |  |  |  |  |  |
Direct | $ | 3,987,875 |  | $ | 3,217,999 |  | $ | 2,783,036
Assumed |  | 9,061,881 |  |  | 7,264,362 |  |  | 6,350,328
Ceded |  | (1,604,251) |  |  | (1,365,378) |  |  | (1,308,940)
Net written premiums | $ | 11,445,505 |  | $ | 9,116,983 |  | $ | 7,824,424
Premiums earned: |  |  |  |  |  |  |  |
Direct | $ | 3,588,926 |  | $ | 3,028,095 |  | $ | 2,551,662
Assumed |  | 8,315,072 |  |  | 7,054,680 |  |  | 6,059,222
Ceded |  | (1,497,557) |  |  | (1,401,262) |  |  | (1,207,198)
Net premiums earned | $ | 10,406,441 |  | $ | 8,681,513 |  | $ | 7,403,686
Incurred losses and LAE: |  |  |  |  |  |  |  |
Direct | $ | 2,384,960 |  | $ | 2,141,065 |  | $ | 1,618,686
Assumed |  | 5,741,109 |  |  | 5,163,946 |  |  | 3,923,298
Ceded |  | (734,816) |  |  | (754,174) |  |  | (619,086)
Net incurred losses and LAE | $ | 7,391,253 |  | $ | 6,550,837 |  | $ | 4,922,898

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- Definition Tabular disclosure of reinsurer or group of reinsurers for whom the entity has a concentration of credit risk. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 825 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=123600520&loc=SL75241803-196195 + Details
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