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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
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Mar. 31, 2021 | Mar. 31, 2020
Effects of Reinsurance [Line Items] |  |
Ceded written premiums | $ 99,110 | $ 110,188
Ceded earned premiums | 78,107 | 90,550
Ceded losses and LAE | 80,843 | 45,115
Assumed written premiums | 2,476 | 2,759
Assumed earned premiums | 2,476 | 2,759
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 earned premiums + 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 Amount of written premiums assumed from other entities. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 605 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547 + 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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