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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 | 9 Months Ended
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Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Effects of Reinsurance [Line Items] |  |  |  |
Ceded written premiums | $ 97,391 | $ 73,015 | $ 237,841 | $ 203,445
Ceded earned premiums | 79,560 | 65,982 | 220,200 | 192,820
Ceded losses and LAE | 79,499 | 28,982 | 164,914 | 189,505
Assumed written premiums | 9,867 | 4,793 | 14,900 | 9,440
Assumed earned premiums | 9,867 | 4,793 | 14,900 | 9,440
Assumed losses and LAE |  |  |  |

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- Definition Assumed Losses And Loss Adjustment Expenses + References No definition available. + Details
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- Definition Ceded Losses And Loss Adjustment Expenses + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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