Quarterly report pursuant to Section 13 or 15(d)

11. Stock Based Compensation (Details)

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11. Stock Based Compensation (Details) - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2017
Dec. 31, 2016
Weighted Average Exercise Price    
Options exercisable $ 1.29  
Stock Option [Member]    
Number of Shares    
Beginning Balance 7,550,457 6,720,458
Grants 1,000,000 1,600,000
Exercises (100,000)
Expirations (5,001)
Cancellations (665,000)
Ending Balance 8,550,457 7,550,457
Options exercisable 7,700,457 6,700,457
Weighted Average Exercise Price    
Beginning Balance $ 1.29 $ 1.35
Grants 1.16 0.99
Exercises 0.37
Expirations 22.00
Cancellations
Ending Balance 1.28 1.29
Options exercisable $ 1.29 $ 1.31
Weighted Average Remaining Contractual Life (years)    
Beginning Balance 3 years 2 months 12 days 3 years 8 months 12 days
Grants 4 years 10 months 24 days 4 years 7 months 6 days
Ending Balance 3 years 2 months 12 days 3 years 2 months 12 days
Options exercisable 3 years 1 month 6 days 3 years
Aggregate Intrinsic Value    
Beginning Balance
Grants  
Cancellations  
Ending Balance