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11. Forward Gold Contracts: Schedule of Options Indexed to Issuer's Equity (Details) - USD ($)
 3 Months Ended
Mar. 31, 2017
Mar. 31, 2017
Dec. 31, 2016
Mar. 31, 2016
Details        
Liabilities, Fair Value Disclosure, Recurring $ 1,364,203 $ 1,364,203 $ 1,386,228 $ (1,364,203)
Payments on forward gold contracts in cash   (81,724)    
Payments in gold purchased by the Company   (83,515)    
Change in fair value of forward gold contracts 143,214 143,214    
Liabilities, Fair Value Disclosure, Recurring 1,364,203 1,364,203 1,386,228 $ (1,364,203)
Forward gold contracts, current portion 968,890 968,890 845,198  
Forward gold contracts, long term $ 395,313 $ 395,313 $ 541,030