Marketable Securities (Details) (USD $)	Dec. 31, 2012
Marketable Securities [Abstract]
Available-for-sale Securities, Equity Securities	$ 31,665
Available-for-sale Securities, Amortized Cost Basis	2,399,178
Available-for-sale Securities, Gross Unrealized Gains	16,594
Available-for-sale Securities, Debt Securities	$ 2,384,107

This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

+ References+ Details

Amount of debt securities categorized neither as held-to-maturity nor trading.

+ References

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+ Details

- Definition

Amount of equity securities categorized neither as held-to-maturity nor as trading.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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+ Details