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Note 3 - Investments | 12 Months Ended
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Dec. 31, 2019
Notes to Financial Statements |
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] |
3. | Investments
As of December 31, 2019 and 2018, investments totaled $335,000 and $258,000, respectively, which consisted of marketable securities. Certain marketable securities were sold during the years ended December 31, 2019 and 2018. The total gain on marketable securities during the year ended December 31, 2019 was $231,000 and the total loss on marketable securities during the year ended December 31, 2018 was $50,000. 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. The loss for the year ended December 31, 2018 was due to an unrealized loss of $57,000 partially offset by a realized gain of $7,000.

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