Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2015

Investments, Debt and Equity Securities [Abstract]

Cash and Cash Equivalents Held in Investment Portfolio

The following table summarizes the fair value of our cash and cash equivalents held in our current investment portfolio:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized (Losses)		Fair Value
March 31, 2015
Cash	$	2,655,834	$	—	$	—	$	2,655,834
Cash equivalents		11,490,067		—		—		11,490,067
Total cash and cash equivalents	$	14,145,901	$	—	$	—	$	14,145,901

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized (Losses)		Fair Value
December 31, 2014
Cash	$	1,398,928	$	—	$	—	$	1,398,928
Cash equivalents		23,588,675		—		—		23,588,675
Total cash and cash equivalents	$	24,987,603	$	—	$	—	$	24,987,603