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Note 16 - Subsequent Events (Details Textual) - Canadian Junior Exploration Mining Company [Member] $ in Thousands, shares in Millions | Feb. 15, 2021 USD ($) shares
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Investment, Number of Shares Acquired (in shares) | shares | 2.5
Payments to Acquire Equity Securities, FV-NI | $ | $ 5,250

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- Definition Amount of cash outflow to acquire investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as investing activity. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 321 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=123583714&loc=SL75117360-209713 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3444-108585 + Details
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- Details
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