Note 19 - Subsequent Event

12 Months Ended

Dec. 31, 2017

Notes to Financial Statements

Subsequent Events [Text Block]

19.

SUBSEQUENT EVENT

In

February 2018,

the Company

’s Board of Directors approved an increase in its quarterly cash dividend from

$0.20

per share to

$0.30

per share, effective for the

first

quarter of

2018.