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Investments (Credit Loss Component Of OTTI On Debt Securities Recognized In Earnings) (Details) (USD $) In Thousands, unless otherwise specified | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2013 | Dec. 31, 2012
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward] |  |
Beginning Balance | $ 25,999 | $ 26,658
Additions: |  |
Initial credit impairment | 0 | 0
Additional credit impairment | 0 | 576
Deductions: |  |
Called |  | (1,235)
Sold | 0 |
Ending Balance | 25,999 | 25,999
Debt Securities [Member] |  |
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward] |  |
Beginning Balance | 21,186 | 20,610
Additions: |  |
Initial credit impairment | 0 | 0
Additional credit impairment | 0 | 576
Deductions: |  |
Called |  | 0
Sold | 0 |
Ending Balance | 21,186 | 21,186
Equity Securities [Member] |  |
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward] |  |
Beginning Balance | 4,813 | 6,048
Additions: |  |
Initial credit impairment | 0 | 0
Additional credit impairment | 0 | 0
Deductions: |  |
Called |  | (1,235)
Sold | 0 |
Ending Balance | $ 4,813 | $ 4,813

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