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Investments in Available-for-Sale Securities (Details 1) (USD $)	Jun. 30, 2012	Dec. 31, 2011
Due within one year, Cost	$ 1,525,705
Due after one year through three years, Cost	499,798
Due after three years, Cost	606,812
No maturity, Cost	7,905
Available-for-sale Securities, Amortized Cost, Total	2,640,220
Due within one year, Fair Value	1,499,585
Due after one year through three years, Fair Value	489,559
Due after three years, Fair Value	614,006
No maturity, Fair Value	24,361
Available-for-sale Securities, Fair Value, Total	$ 2,627,511	$ 2,491,773

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- Definition

Amount of available-for-sale debt securities at cost, net of adjustments, maturing in the second fiscal year through the third fiscal year following the latest fiscal year. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings (less any cumulative-effect adjustments, as defined) and fair value hedge accounting adjustments.

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This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale.

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