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Collateralized Reinsurance And Trust Agreements (Premiums And Losses Ceded By The Company To Affiliate) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
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Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Effects of Reinsurance [Line Items] |  |  |  |
Ceded written premiums | $ 48,522 | $ 58,887 | $ 158,710 | $ 140,450
Ceded earned premiums | 71,143 | 74,315 | 161,693 | 140,640
Ceded losses and LAE | 40,936 | 39,366 | 86,051 | 85,415
Assumed written premiums | 2,795 | 2,724 | 5,554 | 5,033
Assumed earned premiums | 2,795 | 2,724 | 5,554 | 5,033
Assumed losses and LAE |  |  |  |

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