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8. Outstanding Warrants (Tables)
 12 Months Ended
Dec. 31, 2017
Outstanding Warrants Tables  
Weighted average assumptions

Description

   For the year ended December 31  
    2017     2016  
Dividend-yield     0 %     0 %
Risk-free interest rate     1.32 %     0.81 %
Expected volatility     68.5 %     71.8 %
Expected life (years)     2       2  
Market value per share on grant date   $ 1.43     $ 2.56  
Exercise price per share   $ 0.01     $ 0.01  
Fair value per share on grant date   $ 1.42     $ 2.55  
Schedule of warrant activity
     Warrants Outstanding & Exercisable     Weighted - Average Exercise Price     Average Remaining Term in Years  
Outstanding December 31, 2015     368     $ 3.36       4.61  
Granted     227       0.01          
Exercised     (233 )     0.01          
Expired     (18 )     0.01          
Outstanding December 31, 2016     344     $ 3.33       3.88  
Granted     227       0.01          
Exercised     (241 )     0.01          
Expired     -       0.01          
Outstanding December 31, 2017     330     $ 3.47       3.02