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Consolidated Balance Sheets (Parenthetical) (USD $)
In Thousands, except Share data, unless otherwise specified
Sep. 30, 2012
Dec. 31, 2011
Equity securities, cost $ 1,457,758 $ 775,741
Debt securities, amortized cost $ 15,908,901 $ 2,538,872
Common stock, shares authorized 22,000,000 22,000,000
Common stock, shares issued 17,478,746 9,117,787
Treasury stock, shares 546,418 566,141