4. Short Term Investments (Details) (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Amortized Cost	$ 7,406,084
Gross Unrealized Gains	0
Gross Unrealized Losses	(6,448)
Fair Value	7,399,636us-gaap_AvailableForSaleSecurities	0us-gaap_AvailableForSaleSecurities
Corporate debt securities
Amortized Cost	6,806,150
Gross Unrealized Gains	0
Gross Unrealized Losses	(6,448)
Fair Value	6,799,702
Commercial paper
Amortized Cost	599,934
Gross Unrealized Gains	0
Gross Unrealized Losses	0
Fair Value	$ 599,934

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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Amount of unrealized gain before deducting unrealized loss on investments in debt and equity securities classified as available-for-sale securities.

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Amount of unrealized loss before deducting unrealized gain on investments in available-for-sale securities.

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