Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2019

Fair Value Measurements [Abstract]

Liabilities Measured at Fair Value

The recurring fair value measurements of the Company’s derivative liabilities at March 31, 2019 and December 31, 2018 consisted of the following:

	Quoted Prices in
	Active Markets		Significant Other		Significant
	for Identical		Observable Inputs		Unobservable
	Items (Level 1)		(Level 2)		Inputs (Level 3)		Total
March 31, 2019
Liabilities
June 2016 offering warrant liability	$	-	$	-	$	1,000	$	1,000
November 2016 offering warrant liability		-		-		32,000		32,000
Total liabilities	$	-	$	-	$	33,000	$	33,000
December 31, 2018
Liabilities
June 2016 offering warrant liability	$	-	$	-	$	1,000	$	1,000
November 2016 offering warrant liability		-		-		21,000		21,000
Total liabilities	$	-	$	-	$	22,000	$	22,000

Changes in Fair Value of Derivative Liabilities

The following table sets forth a summary of changes in the fair value of the Company's derivative liabilities:

	June 2016		November 2016
	Offering		Offering		Total
	Warrant		Warrant		Derivative
	Liability		Liability		Liabilities
Balance, December 31, 2018	$	1,000	$	21,000	$	22,000
Changes in estimated fair value		-		11,000		11,000
Exercised warrants		-		-		-
Balance, March 31, 2019	$	1,000	$	32,000	$	33,000