4. Short Term Investments (Tables)

3 Months Ended

Mar. 31, 2015

Short Term Investments Tables

Schedule of available for sale securities

The amortized cost and fair value of short term investments as of March 31, 2015 were as follows:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Corporate debt securities	$	5,607,402	$	—	$	(949	)	$	5,606,453

The amortized cost and fair value of short term investments as of December 31, 2014 were as follows:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Corporate debt securities	$	6,806,150	$	—	$	(6,448	)	$	6,799,702
Commercial paper		599,934		—	$	—			599,934
Total marketable securities	$	7,406,084	$	—	$	(6,448	)	$	7,399,636