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Summary Of Significant Accounting And Reporting Policies (Schedule Of Unrealized Losses On Investments) (Details) (USD $)	Dec. 31, 2011	Dec. 31, 2010
Summary Of Significant Accounting And Reporting Policies [Abstract]
Aggregate Unrealized Losses, Less than one year	$ 2,578,990	$ 91,712
Aggregate Unrealized Losses, Greater than one year
Aggregate Fair Value, Less than one year	42,845,635	17,007,886
Aggregate Fair Value, Greater than one year

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This item represents the excess of amortized cost basis over fair value of securities that have been in a loss position for twelve months or longer for those securities which are categorized neither as held-to-maturity nor trading securities.

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This item represents the excess of amortized cost basis over fair value of securities that have been in a loss position for less than twelve months for those securities which are categorized neither as held-to-maturity nor trading securities.

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