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8. Related Parties (Details 3) - shares
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Related Parties Details 3    
Shares granted, beginning 1,500,072 1,727,264
Shares granted 100,000 190,000
Forfeiture of granted shares due to termination of executive employment (143,333)  
Shares vested and transferred (273,341) (417,192)
Shares granted, ending 1,183,398 1,500,072