Note 8 - Marketable Securities

9 Months Ended

Sep. 30, 2017

Notes to Financial Statements

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

8

.

Marketable Securities

       

During the

nine

months ended

September 30, 2017,

the Company acquired available-for-sale marketable equity securities for an aggregate purchase price of

$9.8

million. At

September 30, 2017,

the Company’s investment in marketable securities was an aggregate of

$14.0

million, which includes an unrealized loss of

$1.1

million.