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Stockholders' Equity Stockholders' Equity (Tables)
 12 Months Ended
Dec. 31, 2019
Stockholders' Equity Attributable to Parent [Abstract]  
QuarterlydividendsdeclaredTableTextBlock [Table Text Block]
Dividends
The Board declared quarterly dividends as follows:
(amounts per share)
2019

 
2018

 
 
 
 
First quarter
$
0.30

 
$
0.20

Second quarter
0.30

 
0.20

Third quarter
0.30

 
0.20

Fourth quarter
0.30

 
0.20