Common Stock and Warrant Issuances (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2019

Dec. 31, 2018

Equity [Abstract]

Summary of Warrant Outstanding

The following table summarizes information about shares issuable under warrants outstanding during the three months ended March 31, 2019:

	Warrant shares outstanding		Weighted average exercise price		Weighted average remaining life		Intrinsic value
Outstanding at January 1, 2019		5,477,975	$	1.01
Issued		-		-
Exercised		-		-
Expired or cancelled		-		-
Outstanding at March 31, 2019		5,477,975	$	1.01		1.13	$	-
Exercisable at March 31, 2019		5,477,975	$	1.01		1.13	$	-

The following table summarizes information about shares issuable under warrants outstanding during the year ended December 31, 2018:

	Warrant shares outstanding			Weighted average exercise price		Weighted average remaining life		Intrinsic value
Outstanding at January 1, 2018		13,720,742		$	1.49
Issued		-
Additional warrants issued for trigger of anti-dilution protection		1,000,000		$	0.40
Exercised		(5,579,530	)	$	0.91
Expired or cancelled		(3,663,237	)	$	0.56
Outstanding at December 31, 2018		5,477,975		$	1.01		1.37	$	-
Exercisable at December 31, 2018		5,477,975		$	1.01		1.37	$	-