Note 4 - Investments

3 Months Ended

Mar. 31, 2019

Notes to Financial Statements

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

4. Investments

As of

March 31, 2019

and

December 31, 2018,

investments totaled

$417,000

and

$258,000,

respectively, which consisted of equity securities. Certain marketable securities were sold during the

three

months ended

March 31, 2019

and

none

were sold during the

three

months ended

March 31, 2018.

The total gain on marketable securities during the

three

months ended

March 31, 2019

and

March 31, 2018

was

$170,000

and

$32,000

respectively. The gain for the

three

months ended

March 31, 2019

was due to an unrealized gain of

$167,000

and a realized gain of

$3,000.

The gain for the

three

months ended

March 31, 2018

was due to an unrealized gain of

$32,000.