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Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data	Jun. 30, 2011	Dec. 31, 2010
Consolidated Balance Sheets
Amortized cost on fixed maturities trading investments	$ 2,496,686	$ 2,617,656
Cost - equity security trading investments	381,967	336,757
Cost - Short-term Investments	$ 139,242	$ 143,378
Common Stock
Common stock, shares authorized	70,000	70,000
Common stock, shares issued	54,822	54,803
Common stock, shares outstanding	54,822	54,803

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