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Fair Value Measurement (Investment-Related Cash Flow Schedule)(Details) (USD $)	9 Months Ended	12 Months Ended
	Sep. 30, 2012	Dec. 31, 2011
Fair Value Measurement [Abstract]
Proceeds from sale of equity sales	$ 6,799,194	$ 8,287,182
Realized gain on equity securities	4,173,141	5,051,406
Realized losses due to other-than-temporary impairment of equity securities	$ 0	$ (415,287)

The amount by which the fair value of an investment in debt and equity securities categorized as Available-for-sale is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income.

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