Realized And Unrealized Investment Gains (Losses) (Tables)	3 Months Ended
Mar. 31, 2013
Realized and Unrealized Investment Gains (Losses) [Abstract]
Realized and Unrealized Investment Gains (Losses)
Change In Unrealized Gains (Losses) Of Available For Sales Securities

Tabular disclosure of realized gains and losses on investments reported in the statement of income.

No definition available.

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