Note 4 - Investments

6 Months Ended

Jun. 30, 2019

Notes to Financial Statements

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

4. Investments

As of

June 30, 2019

and

December 31, 2018,

investments totaled

$735,000

and

$258,000,

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

three

months ended

June 30, 2019,

and

none

were sold during the

three

months ended

June 30, 2018.

The total gain on marketable securities during the

three

months ended

June 30, 2019

was

$439,000,

and the unrealized loss on marketable securities during the

three

months ended

June 30, 2018

was

$97,000.

The gain for the

three

months ended

June 30, 2019

was due to an unrealized gain of

$387,000

and a realized gain of

$52,000.

Certain marketable securities were sold during the

six

months ended

June 30, 2019

and

none

were sold during the

six

months ended

June 30, 2018.

The total gain on marketable securities during the

six

months ended

June 30, 2019

was

$609,000

and the unrealized loss on marketable securities during the

six

months ended

June 30, 2018

was

$65,000.

The gain for the

six

months ended

June 30, 2019

was due to an unrealized gain of

$554,000

and a realized gain of

$55,000.