4. Short Term Investments (Details) - USD ($)	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Amortized Cost		$ 7,406,084
Gross Unrealized Gains		0
Gross Unrealized Losses		(6,448)
Fair Value		7,399,636
Corporate debt securities
Amortized Cost	$ 2,957,818	6,806,150
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(1,390)	(6,448)
Fair Value	$ 2,956,428	6,799,702
Commercial paper
Amortized Cost		599,934
Gross Unrealized Gains		0
Gross Unrealized Losses		0
Fair Value		$ 599,934