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Percentage of fee paid to agent in connection with private placement.

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Reduced percentage of fee paid to agent in connection with private placement.

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The cash inflow associated with the amount received from entity's raising of capital via private rather than public placement, net of issuance costs.

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Face amount or stated value per share of common stock.

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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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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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The cash outflow for cost incurred directly with the issuance of an equity security.

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The cash inflow associated with the amount received from entity's raising of capital via private rather than public placement.

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Per share or per unit amount of equity securities issued.

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Note 9 - Related Party Transactions (Details Textual) - USD ($)		1 Months Ended
	Oct. 23, 2017	Sep. 30, 2016	Dec. 31, 2018	Jun. 30, 2018	Apr. 26, 2018	Apr. 16, 2018	Jan. 22, 2018	Sep. 30, 2012	Sep. 29, 2012	Nov. 29, 2010
Common Stock, Par or Stated Value Per Share			$ 0.01	$ 0.01
Long-term Debt, Total			$ 0
The Joint Venture Company [Member]
Equity Method Investment, Ownership Percentage			60.00%		60.00%
Private Placement [Member] \| Certain Purchasers [Member]
Stock Issued During Period, Shares, New Issues	553,672
Common Stock, Par or Stated Value Per Share	$ 0.01
Shares Issued, Price Per Share	$ 19
Proceeds from Issuance of Private Placement	$ 10,500,000
Proceeds from Issuance of Private Placement, Net of Issuance Costs	$ 10,000,000
Private Placement Fee, Percentage	6.50%
Private Placement Fee, Reduced Percentage	3.25%
Payments of Stock Issuance Costs	$ 500,000
JEX [Member]
Overriding Royalty Interest			3.00%						2.00%
Management Services Agreement, Initial Term		1 year
Management Services Agreement, Fee Per Month		$ 32,000
JEX [Member] \| Expense for Office Space and Equipment [Member]
Management Services Agreement, Fee Per Month		$ 6,900
JEX [Member] \| ALASKA
Overriding Royalty Interest								2.00%
Juneau Exploration L.P. [Member] \| Private Placement [Member]
Stock Issued During Period, Shares, New Issues	13,200
Stock Issued During Period, Value, New Issues	$ 250,800
Royal Gold [Member]
Overriding Royalty Interest										3.00%
Royal Gold [Member] \| Common Stock [Member]
Shares Issued, Price Per Share						$ 26
Percentage of Ownership Interest Acquired by Related Party						13.60%	12.70%