Mineral Properties, Guadalupe (Details)			1 Months Ended		12 Months Ended
	Jan. 23, 2019 USD ($)	Oct. 24, 2018 USD ($)	Oct. 31, 2018 USD ($)	Oct. 31, 2017 USD ($) item	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Property, Plant and Equipment [Line Items]
Proceeds from option/sale agreements, net					$ 50,000	$ 1,761,000
Guadalupe De Los Reyes, Mexico
Property, Plant and Equipment [Line Items]
Proceeds from option/sale agreements, net	$ 100,000	$ 50,000
Interest rate (as a percent)			1.50%
Guadalupe De Los Reyes, Mexico | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2018-10-01
Property, Plant and Equipment [Line Items]
Future payment			$ 1,500,000
Timing of future payment			6 months
Guadalupe De Los Reyes, Mexico | On or Before January 23, 2019
Property, Plant and Equipment [Line Items]
Proceeds from option/sale agreements, net			$ 150,000
Guadalupe De Los Reyes, Mexico | Option Agreement Two
Property, Plant and Equipment [Line Items]
Interest has right to earn (as a percent)				100.00%
Sale price of gold/silver project				$ 6,000,000
Number of successive payments | item				2
Back in Right (as a percent)				49.00%
Ownership interest if terms of option agreement not fulfilled (as a percent)				0.00%
Ownership to be transferred (as a percent)				100.00%
Value of carrying value for option payment proceeds to be recognized as contract liability					$ 0
Guadalupe De Los Reyes, Mexico | Option Agreement Two | Open Pit Mining
Property, Plant and Equipment [Line Items]
Aggregate royalty payments to be received				$ 2,000,000
Guadalupe De Los Reyes, Mexico | Option Agreement Two | Execution of Option Agreement
Property, Plant and Equipment [Line Items]
Sale price of gold/silver project				1,500,000
Guadalupe De Los Reyes, Mexico | Option Agreement Two | One Year Anniversary
Property, Plant and Equipment [Line Items]
Sale price of gold/silver project				1,500,000
Guadalupe De Los Reyes, Mexico | Option Agreement Two | Two Year Anniversary
Property, Plant and Equipment [Line Items]
Sale price of gold/silver project				1,500,000
Guadalupe De Los Reyes, Mexico | Option Agreement Two | Before Four Year Anniversary
Property, Plant and Equipment [Line Items]
Sale price of gold/silver project				$ 1,500,000
Guadalupe De Los Reyes, Mexico | Option Agreement Two | Minimum | Open Pit Mining
Property, Plant and Equipment [Line Items]
Net smelter return royalty (as a percent)				1.00%
Gold price (USD per ounce)				$ 1,600
Guadalupe De Los Reyes, Mexico | Option Agreement Two | Minimum | Underground Mining
Property, Plant and Equipment [Line Items]
Net smelter return royalty (as a percent)				1.00%
Gold price (USD per ounce)				$ 1,600
Guadalupe De Los Reyes, Mexico | Option Agreement Two | Maximum | Open Pit Mining
Property, Plant and Equipment [Line Items]
Net smelter return royalty (as a percent)				2.00%
Gold price (USD per ounce)				$ 1,400
Guadalupe De Los Reyes, Mexico | Option Agreement Two | Maximum | Underground Mining
Property, Plant and Equipment [Line Items]
Net smelter return royalty (as a percent)				2.00%
Gold price (USD per ounce)				$ 1,400
Guadalupe De Los Reyes, Mexico | Minera Gold Stake S A de C V | Option Agreement Two
Property, Plant and Equipment [Line Items]
Ownership interest (as a percent)				100.00%