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Derivative Financial Instruments (Schedule Of Derivative Gains And Losses In The Consolidated Statements Of Operations) (Details) - Not Designated as Hedging Instrument [Member] - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Derivative Financial Instruments [Line Items] |  |  |
Gains (Losses) Recognized in Income | $ 22,306 | $ 7,378 | $ 6,715
Total Return Swap [Member] | Net realized investment gains [Member] |  |  |
Derivative Financial Instruments [Line Items] |  |  |
Gains (Losses) Recognized in Income | 0 | 1,039 | (3,783)
Equity contracts [Member] | Net realized investment gains [Member] |  |  |
Derivative Financial Instruments [Line Items] |  |  |
Gains (Losses) Recognized in Income | $ 22,306 | $ 6,339 | $ 10,498

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- Definition Derivative Financial Instruments [Line Items] + References No definition available. + Details
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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5618551-113959 + Details
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- Details
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