Mineral Price Per Pound, Low Range

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- Definition

Mineral Price Per Pound, Upper Range

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- Definition

Royalty Percentage of Minerals Recovered, Sold Above Maximum Price Threshold

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- Definition

Royalty Percentage of Minerals Recovered, Sold Between Price Thresholds

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- Definition

Royalty Percentage of Minerals Recovered, Sold Under Minimum Price Threshold

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- Definition

Testing Permit and Lease Option Agreement, Accrued Liability

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Testing Permit and Lease Option Agreement, Payments

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- Definition

Testing Permit and Lease Option Agreement, Percentage that May Be Paid in Common Shares

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- Definition

Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
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The amount of cash paid for royalties during the current period.

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-Name Accounting Standards Codification
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The cash inflow associated with the amount received by a corporation from a shareholder during the period.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Number of shares of stock issued during the period pursuant to acquisitions.

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RELATED PARTY TRANSACTIONS (Details) - USD ($)		1 Months Ended		12 Months Ended
RELATED PARTY TRANSACTIONS (Details) - USD ($)	Jun. 30, 2019	Jun. 30, 2019	Jun. 30, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Related Party Transaction [Line Items]
Sale of stock, number of shares issued in transaction (in shares)				0	0	13,654,488
Common stock, shares, outstanding (in shares)				66,205,153	46,519,132
Testing permit and lease option agreement, accrued liability				$ 810,000
Royalty percentage of minerals recovered sold under minimum price threshold			3.125%
Mineral price per pound, low range			$ 65.00
Royalty percentage of minerals recovered sold between price thresholds			6.25%
Mineral price per pound, upper range			$ 95.00
Royalty percentage of minerals recovered sold above maximum price threshold			7.50%
Payments for royalties				$ 0
Mestena Sellers
Related Party Transaction [Line Items]
Common stock, shares, outstanding (in shares)				4,303,032
Scenario, Forecast
Related Party Transaction [Line Items]
Testing permit and lease option agreement, payments	$ 1,350,000
Director
Related Party Transaction [Line Items]
Equity method, ownership percentage				81.00%
Proceeds from contributed capital				$ 370,000
Director \| Leoncito Project, L.L.C.
Related Party Transaction [Line Items]
Testing permit and lease option agreement, percentage that may be paid in common shares			50.00%
Testing permit and lease option agreement, accrued liability				$ 300,000
Director \| Scenario, Forecast \| Leoncito Project, L.L.C.
Related Party Transaction [Line Items]
Testing permit and lease option agreement, payments		$ 600,000
Director \| Mesteña LLC
Related Party Transaction [Line Items]
Sale of stock, number of shares issued in transaction (in shares)			4,551,284
Director \| United Nuclear
Related Party Transaction [Line Items]
Equity method, ownership percentage				19.00%