Annual report pursuant to Section 13 and 15(d)

Consolidated Statements Of Stockholders' Equity (Parenthetical)

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Consolidated Statements Of Stockholders' Equity (Parenthetical) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Comprehensive Earnings:      
Change in unrealized investment gains, tax $ (334) $ (511) $ 2,663