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Investments (Cumulative Credit Losses On Securities) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012
Investments [Abstract]
Balance of cumulative credit losses on securities, Beginning Balance	$ 390
Additions for credit losses recorded which were not previously recognized as components of earnings	50
Balance of cumulative credit losses on securities, Ending Balance	$ 440

The cumulative amount of credit losses recognized in earnings related to debt securities held for which a portion of an other than temporary impairment (OTTI) was recognized in other comprehensive income (a component of shareholders' equity).

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