Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2015

Fair Value Measurements

Summary of cash equivalents measured at fair value on a recurring basis

			Fair Value Measurement
			as of June 30, 2015
	Carrying value
	as of June 30,
	2015		Level 1		Level 2	Level 3
Cash equivalents	$	5,501,377	$	5,501,377	—	—

			Fair Value Measurement
			as of December 31, 2014
	Carrying value
	as of December 31,
	2014		Level 1		Level 2	Level 3
Cash equivalents	$	9,004,991	$	9,004,991	—	—