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9. Stockholders' Equity (Tables)
12 Months Ended
Dec. 31, 2014
Shareholders' Equity:  
Assumptions used
   2014   2013 
Weighted average risk-free rate   1.38%   0.60%
Weighted average volatility   80.37%   79.82%
Dividend yield   0.00%   0.00%
Expected life   4.87 years    4.80 years 
Stock option activity table
   Outstanding
Options
   Weighted
Average Exercise
Price per Share
   Weighted
Average
Remaining
Contractual
Life (in years)
   Aggregate Intrinsic
Value
 
Outstanding January 1, 2013   1,814,000   $0.66    6.37   $25,000 
Granted   1,280,000    0.27         
Exercised   (30,000)   0.17         
Cancelled   (245,000)   0.49         
Forfeited   (102,000)   0.19         
Expired   (53,000)   1.09         
Outstanding December 31, 2013   2,664,000    0.50    7.14    706,000 
Granted   5,581,000    0.47         
Exercised   (291,000)   0.25         
Cancelled   (89,000)   1.11         
Forfeited   (642,000)   0.27         
Expired   (1,000)   3.15         
Outstanding December 31, 2014   7,222,000   $0.50    8.60   $285,000 
                     
Options vested and exercisable at December 31, 2014   1,562,000   $0.65    5.27   $99,000 
Restricted stock activity
   Outstanding
Restricted Stock Units
   Weighted
Average Fair Value per Share
 
Outstanding January 1, 2013   560,000   $0.14 
Granted        
Released   (373,000)    
Canceled        
Outstanding December 31, 2013   187,000   $0.14 
Granted        
Released   (173,000)    
Cancelled   (14,000)    
Outstanding December 31, 2014      $ 
           
Balance exercisable at December 31, 2014        
Warrant activity table
   Outstanding
Warrants
   Weighted
Average Exercise
Price per Share
   Weighted
Average
Remaining
Contractual
Life (in years)
 
Outstanding January 1, 2013   4,500,000   $0.79    4.35 
Granted   3,600,000    0.40     
Exercised   (1,500,000)   0.37     
Forfeited            
Outstanding December 31, 2013   6,600,000   $0.67    4.18 
Granted            
Exercised            
Forfeited            
Outstanding December 31, 2014   6,600,000   $0.67    3.18 
                
Balance exercisable at December 31, 2014   6,600,000   $0.67    3.18