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Stockholders' Equity (Tables)
 12 Months Ended
Dec. 31, 2015
Shareholders' Equity [Abstract]  
Schedule of stock options outstanding and exercisable

    Weighted          
     Average  Weighted     Weighted 
     Remaining  Average     Average 
Range of Exercise Number  Contractual  Exercise  Options  Exercise 
Prices between Outstanding  Life  Price  Exercisable  Price 
$0.19 - $0.45  7,758,536   9.38  $0.30   1,358,537  $0.24 
$0.46 - $0.79  90,000   8.04   0.79   90,000  $0.20 
$0.80 - $12.25  50,042   6.59   3.56   50,042  $3.56 
   7,898,578   6.44  $0.27
Summary of stock option activity

  Options  Weighted Average 
  Outstanding  Exercise Price 
Balance, December 31, 2014 5,613,977  $1.45 
Granted  7,557,714   0.19 
Exercised  -   - 
Forfeited or expired  (5,273,113)  0.78 
Balance, December 31, 2015 7,898,578  $0.33