Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2018

Fair Value Disclosures [Abstract]

Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis by Level

	Fair Value Measurement Using
	Total		Quoted Prices in Active Markets for Identical Instruments (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Liabilities at December 31, 2018
Warrants issued August 2013	$	—	$	—	$	—	$	—
Warrants issued September 2016		—		—		—		—
Total liabilities at fair value:	$	—	$	—	$	—	$	—
Liabilities at December 31, 2017:
Warrants issued August 2013	$	5,746	$	—	$	—	$	5,746
Warrants issued September 2016		19,569,231		—		—		19,569,231
Total liabilities at fair value:	$	19,574,977	$	—	$	—	$	19,574,977

Summary of Changes in Fair Value of Level 3 Financial Liabilities

The following table sets forth a summary of changes in the fair value of the Company’s Level 3 financial liabilities for the year ended December 31, 2018:

	Warrants issued August 2013			Warrants issued September 2016			Total Liabilities
Balance at beginning of period	$	5,746		$	19,569,231		$	19,574,977
Issues		-			-			-
Settlements		-			(16,984,616	)		(16,984,616	)
Revaluation		(5,746	)		(2,584,615	)		(2,590,361	)
Balance at end of period	$	-		$	-		$	-