Forward Gold Sales Contract Liability (Details)	3 Months Ended
	Mar. 31, 2019
PDK [Member]
Forward Gold Sales Contract Liability (Textual)
Purchase Agreement, description	The Company entered into and closed a Pre-Paid Forward Gold Purchase Agreement (the "Purchase Agreement") with PDK Utah Holdings L.P. ("PDK") for the sale and purchase by PDK of gold produced from the Company's mining property. Under the terms of the Purchase Agreement, PDK agreed to purchase a total of 73,910 ounces of gold from the Company at a reduced market price. Prepayment will be made in three tranches, with the initial tranche in the amount of $11,200,000 having been made upon execution of the Purchase Agreement on March 7, 2019 (the "Initial Funding"), $4,500,000 for Tranche 2 to occur at least six months following the Initial Funding date, and $5,500,000 for Tranche 3 to occur at least 10 months following the Initial Funding date, provided that all conditions precedent for funding Tranches 2 and 3 are met. From the Initial Funding, the Company paid an upfront fee of $600,000 to PDK for expenses incurred in connection with the transaction. Under the terms of the Purchase Agreement, the Company agreed to sell gold at a reduced market price in certain quantities during agreed periods following prepayment of each tranche. The first gold delivery of 655 ounces is due December 2020.
Tranches [Member]
Forward Gold Sales Contract Liability (Textual)
Purchase Agreement, description	The forward gold sales contract liability due under the terms of the Purchase Agreement at March 31, 2019 is $10,600,000 which is the $11,200,000 received from PDK in the initial tranche less the $600,000 upfront fee paid by the Company. On October 31, 2019, the Purchase Agreement was amended to reduce the number of gold ounces to be delivered and the amount of funding to be received in Tranches 2 and 3 (Note 20).