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Stockholders' Equity (Tables)
 9 Months Ended
Sep. 30, 2018
Stockholders' Equity Note [Abstract]  
Schedule Of Share Based Compensation Warrants Activity [Table Text Block] The following weighted-average assumptions were utilized in the calculation of the fair value of the stock options:
 
Expected life
 
 
6.25
 
Weighted average volatility
 
 
69
%
Forfeiture rate
 
 
15
%
Weighted average risk-free interest rate
 
 
2.75
%
Expected dividend rate
 
 
0
%
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
The Company has the following warrants outstanding at September 30, 2018:
 
Exercise Price
 
Warrants
 
 
Wtd. Avg.


Exercise


Price
 
 
Remaining


Life


(in years)
 
$1.80
 
 
80,000
 
 
$
1.80
 
 
 
2.38
 
$4.00
 
 
2,395,471
 
 
$
4.00
 
 
 
0.32
 
$10.00
 
 
20,313
 
 
$
10.00
 
 
 
0.43
 
 
 
 
2,495,784
 
 
$
3.98