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Note 3 - Investments | 12 Months Ended
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Dec. 31, 2020
Notes to Financial Statements |
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] |
3. | Investments
As of December 31, 2020 and 2019, investments totaled $0 and $335,000, respectively, which consisted of marketable securities. Certain marketable securities were sold during the years ended December 31, 2020 and 2019. The total loss on marketable securities during the year ended December 31, 2020 was $62,000 and the total gain on marketable securities during the year ended December 31, 2019 was $231,000. The loss for the year ended December 31, 2020 was due to an unrealized gain of $98,000 and a realized loss of $160,000. The gain for the year ended December 31, 2019 was due to an unrealized gain of $170,000 and a realized gain of $61,000.

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