Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity (Deficit) (Tables)

v3.19.1
Stockholders' Equity (Deficit) (Tables)
 12 Months Ended
Dec. 31, 2018
Equity [Abstract]  
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]
Information regarding warrants for common stock outstanding and exercisable as of December 31, 2018 is as follows:
 
 
 
 
Warrants
 
 
 
 
 
Warrants
 
Exercise
 
 
Outstanding as of
 
 
Remaining
 
 
Exercisable as of
 
Price
 
 
December 31, 2018
 
 
Life (years)
 
 
December 31, 2018
 
 
 
 
 
 
 
 
 
 
 
 
 
$
2.00
 
 
 
275,000
 
 
 
4.26
 
 
 
97,778
 
 
$
3.00
- $
4.00
 
 
 
5,522,720
 
 
 
4.21
 
 
 
5,522,720
 
 
$
4.50
- $
4.95
 
 
 
298,882
 
 
 
2.73
 
 
 
298,882
 
 
$
5.40
- $
6.25
 
 
 
2,543,577
 
 
 
3.58
 
 
 
2,543,577
 
 
$
10.35
 
 
 
1,634
 
 
 
2.28
 
 
 
1,634
 
 
$
3.85
 
 
 
8,641,813
 
 
 
3.97
 
 
 
8,464,591
 
 
 
Exercise
Price
 
 
Warrants
Outstanding as of
December 31, 2017
 
 
Remaining
Life (years)
 
 
Warrants
Exercisable as of
December 31, 2017
 
 
 
 
 
 
 
 
 
 
 
 
$
4.50
 
 
 
2,829,645
 
 
 
4.67
 
 
 
2,725,495
 
$
5.40
 
 
 
2,724,298
 
 
 
4.49
 
 
 
2,724,298
 
$
10.35
 
 
 
1,634
 
 
 
3.28
 
 
 
1,634
 
$
4.94
 
 
 
5,555,577
 
 
 
4.58
 
 
 
5,451,427