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Investments (Components Of Net Realized Gains, Excluding OTTI Charges) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016
Schedule of Available-for-sale and held-to-maturity Securities [Line Items] |  |  |  |
HTM securities realized gain | $ 44 | $ 3 | $ 44 | $ 3
HTM fixed income securities losses | 0 | 0 | (1) | (1)
Other investments gains | 0 | 0 | 480 | 0
Other investments losses | (5) | 0 | (19) | (4)
Total net realized gains (excluding OTTI charges) | 2,951 | 2,314 | 5,381 | 3,203
Proceeds from sale of available for sale securities | 123,100 | 88,700 | 723,400 | 105,900
Fixed Income Securities [Member] |  |  |  |
Schedule of Available-for-sale and held-to-maturity Securities [Line Items] |  |  |  |
AFS securities gains | 2,715 | 365 | 6,267 | 985
AFS securities losses | (153) | (5) | (1,740) | (41)
Equity Securities [Member] |  |  |  |
Schedule of Available-for-sale and held-to-maturity Securities [Line Items] |  |  |  |
AFS securities gains | 350 | 2,171 | 350 | 2,501
AFS securities losses | $ 0 | $ (220) | $ 0 | $ (240)

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