Warrants (Tables)

3 Months Ended

Mar. 31, 2020

Warrants [Abstract]

Outstanding Common Stock Warrants

Outstanding common stock warrants at March 31, 2020 consist of the following:

Issue Date	Expiration Date	Total Warrants		Exercise Price
June 22, 2015	June 22, 2020		600,000	$	3.75
December 30, 2015	December 30, 2020		130,089	$	5.65
January 29, 2016	January 29, 2021		19,812	$	5.30
			749,901