Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2017

Fair Value Disclosures [Abstract]

Summary of Assets Measured at Fair Value

Below is a summary of assets measured at fair value as of June 30, 2017 and December 31, 2016.

			Fair Value Measurements Using
	June 30, 2017		QuotedPrices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets
Money market funds	$	9,281,142	$	9,281,142	$	—	$	—
Corporate debt securities		77,183,527		—		77,183,527		—
Total	$	86,464,669	$	9,281,142	$	77,183,527	$	—

			Fair Value Measurements Using
	December 31, 2016		QuotedPricesin Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets
Money market funds	$	45,523,208	$	45,523,208	$	—	$	—
Corporate debt securities		27,702,317		—		27,702,317		—
Total	$	73,225,525	$	45,523,208	$	27,702,317	$	—