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Commitments - Summary of Continuity of the Flow-through Share Premium Liability (Detail) - CAD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Commitments [abstract]    
Balance, beginning of the period $ 109,251 $ 179,212
Liability incurred on flow-through shares issued 784,892 130,000
Settlement of flow-through share premium liability on expenditures made (343,751) (199,961)
Balance, end of the period $ 550,392 $ 109,251