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Note 6 - Capital Stock
 9 Months Ended
Sep. 30, 2016
Notes to Financial Statements  
Stockholders' Equity Note Disclosure [Text Block]
6
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Capital Stock
 
On October 22, 2015, our Board of Directors authorized the purchase of $500 million of our common stock, of which $276 million was remaining at September 30, 2016. We purchased approximately 2,228,000 shares, or $174.8 million, of our common stock under our repurchase authorization during the nine months ended September 30, 2016. On July 21, 2016, our Board of Directors declared a regular quarterly cash dividend of $0.22, which was paid August 19, 2016, to stockholders of record on August 5, 2016. On October 20, 2016, our Board of Directors declared a regular quarterly dividend of $0.22 per common share, which will be paid on November 18, 2016, to stockholders of record on November 4, 2016.