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Investments (Components Of Net Realized Gains, Excluding OTTI Charges) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Schedule of Available-for-sale and held-to-maturity Securities [Line Items] |  |  |  |
HTM securities realized gain | $ 0 | $ 0 | $ 44 | $ 3
HTM fixed income securities losses | 0 | 0 | (1) | (1)
Other investments gains | 0 | 3 | 480 | 3
Other investments losses | 0 | 0 | (19) | (4)
Total net realized gains (excluding OTTI charges) | 6,871 | 4,030 | 12,252 | 7,233
Proceeds from sale of available for sale securities | 107,600 | 27,000 | 831,000 | 132,900
Fixed Income Securities [Member] |  |  |  |
Schedule of Available-for-sale and held-to-maturity Securities [Line Items] |  |  |  |
AFS securities gains | 2,070 | 2,204 | 8,337 | 3,189
AFS securities losses | (74) | (40) | (1,814) | (81)
Equity Securities [Member] |  |  |  |
Schedule of Available-for-sale and held-to-maturity Securities [Line Items] |  |  |  |
AFS securities gains | 4,875 | 1,863 | 5,225 | 4,364
AFS securities losses | $ 0 | $ 0 | $ 0 | $ (240)

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