Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Tables)

v3.10.0.1
Stock-Based Compensation (Tables)
9 Months Ended
Sep. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Share-based Compensation Arrangement by Share-based Payment Award Options and Warrants Vested and Expected to Vest Outstanding and Exercisable [Table Text Block] The assumptions used for the nine months ended September 30, 2017 are as follows:
 
Exercise price     $29.05-$30.45
Expected dividends     0%
Expected volatility     90%-92%
Risk free interest rate     1.67%-1.75%
Expected life of option     4.2-4.3 years
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]
A summary of stock option activities for the nine months ended September 30, 2018 is as follows:
 
   
Options
   
Weighted 
Average Exercise
Price
   
Weighted Average
Remaining
Contractual Life
 
Aggregate
Intrinsic
Value
 
                       
Balance - December 31, 2016     332,561     $ 61.87     5.49 years   $ 194,355  
                             
Granted     90,286     $ 20.12              
Exercised     (11,966 )   $ 13.89         $ 163,050  
Expired     (19,091 )   $ 77.46              
Forfeited     (32,714 )   $ 42.21              
Balance - December 31, 2017     359,076     $ 53.93     4.60 years   $ 1,800  
                             
Granted     -     $ -              
Exercised     -     $ -         $ -  
Expired     (8,124 )   $ 53.27              
Forfeited     (3,187 )   $ 27.28              
                             
Balance - September 30, 2018 - outstanding     347,765     $ 54.19     3.90 years   $ -  
                             
Balance - September 30, 2018 - exercisable     257,985     $ 64.63     3.21 years   $ -  
                             
Grant date fair value of options granted - September 30, 2018           $ -              
                             
Weighted average grant date fair value - September 30, 2018           $ -