Note 6 - Capital Stock

6 Months Ended

Jun. 30, 2018

Notes to Financial Statements

Stockholders' Equity Note Disclosure [Text Block]

6 . Capital Stock

On

October 22, 2015,

our Board of Directors authorized the purchase of

$500

million of our common stock. On

April 20, 2017,

our Board of Directors authorized an additional purchase of up to

$500

million of our common stock. At

June 30, 2018,

$471

million of this authorization was remaining. We purchased approximately

420,000

shares, or

$50

million, of our common stock under our repurchase authorizations during the

six

months ended

June 30, 2018.

On

April 19, 2018,

our Board of Directors declared a regular quarterly dividend of

$0.24

per common share, which was paid on

May 18, 2018

,

to stockholders of record on

May 4, 2018

.

On

July 19, 2018,

our Board of Directors declared a regular quarterly dividend of

$0.24

per common share, which will be paid on

August 17, 2018

,

to stockholders of record on

August 3, 2018

.