Note 4 - Investments

3 Months Ended

Mar. 31, 2021

Notes to Financial Statements

Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]

4. Investments

As of

March 31, 2021,

we had

no

investments. As of

March 31, 2020

investments totaled

$228,000

which consisted of equity securities. These marketable securities were sold during the

three

months ended

March 31, 2020.

The total loss on marketable securities during the

three

months ended

March 31, 2020

was

$59,000.

The loss for the

three

months ended

March 31, 2020

was due to an unrealized loss of

$76,000

and a realized gain of

$17,000.