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4. Joint Ventures: Schedule of change in non-controlling interest (Details) - USD ($)
3 Months Ended
Mar. 31, 2017
Dec. 31, 2016
Details    
Non-controlling interests $ 3,136,929 $ 3,142,312
Proceeds from contributions from noncontrolling interest 5,650  
Net loss attributable to non-controlling interests $ (11,033)