Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2014

Investments Debt And Equity Securities [Abstract]

Available for Sale Securities Held in Investment Portfolio

The following table summarizes the fair value of our cash, cash equivalents and available-for-sale marketable securities held in our current investment portfolio:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized (Losses)		Fair Value
March 31, 2014
Cash	$	431,297	$	—	$	—	$	431,297
Cash equivalents		26,032,328		—		—		26,032,328
Total cash, cash equivalents, and marketable securities	$	26,463,625	$	—	$	—	$	26,463,625
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized (Losses)		Fair Value
December 31, 2013
Cash	$	1,355,281	$	—	$	—	$	1,355,281
Cash equivalents		29,230,143		—		—		29,230,143
Total cash, cash equivalents, and marketable securities	$	30,585,424	$	—	$	—	$	30,585,424