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Investments (Gross Gains And Losses Realized On Sales Of Investments) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Fixed Maturity Securities [Member] |  |  |
Investments [Line Items] |  |  |
Gross Realized Gains | $ 631 | $ 7,015 | $ 9,320
Gross Realized Losses | (495) | (9,734) | (3,842)
Net | 136 | (2,719) | 5,478
Equity Securities [Member] |  |  |
Investments [Line Items] |  |  |
Gross Realized Gains | 41,305 | 59,342 | 82,385
Gross Realized Losses | (58,764) | (17,705) | (58,297)
Net | (17,459) | 41,637 | 24,088
Short-term Investments [Member] |  |  |
Investments [Line Items] |  |  |
Gross Realized Gains | 0 | 0 | 0
Gross Realized Losses | (1,396) | (1,943) | (903)
Net | $ (1,396) | $ (1,943) | $ (903)

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