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Investments (Proceeds From Sales And Realized Gains And Losses) (Details) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
|
Sep. 30, 2012
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Sep. 30, 2011
|
Sep. 30, 2012
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Sep. 30, 2011
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| Investments [Abstract] | ||||
| Proceeds | $ 15,609 | $ 33,719 | $ 26,063 | $ 62,833 |
| Realized gains | 91 | 406 | 754 | 773 |
| Realized losses | $ 128 | $ 96 | $ 192 | $ 197 |