Investments (Non-Cash OTTI Credit Losses Recognized In Earnings) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Investments [Abstract]        
Balance of credit-related OTTI, Beginning $ 14,312 $ 14,617 $ 14,424 $ 14,653
Additions for credit-related OTTI not previously recognized 0 0 0 0
Additional increases for credit-related OTTI previously recognized when there is no intent to sell and no requirement to sell before recovery of amortized cost basis 0 0 0 19
Decreases for previously recognized credit-related OTTI because there was an intent to sell 0 0 0 0
Reduction for increases in cash flows expected to be collected (112) (46) (224) (101)
Balance of credit-related OTTI, Ending $ 14,200 $ 14,571 $ 14,200 $ 14,571