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Stockholders' Equity Stockholders' Equity (Tables)
 12 Months Ended
Dec. 31, 2018
Stockholders' Equity Attributable to Parent [Abstract]  
QuarterlydividendsdeclaredTableTextBlock [Table Text Block]
Dividends
The Board declared quarterly dividends as follows:
(amounts per share)
2018

 
2017

 
 
 
 
 
 
First quarter
$
0.20

 
$
0.125

 
Second quarter
0.20

 
0.150

 
Third quarter
0.20

 
0.150

 
Fourth quarter
0.20

 
1.150

(1) 
__________________________________
(1) 
Includes a $1.00 per share special dividend.