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Common Stock and Dividends (Tables)
 9 Months Ended
Sep. 30, 2017
Stockholders' Equity Note [Abstract]  
Schedule of Dividends Declared and Paid
Dividends declared and paid on a per share basis were as follows:
 
 
Three Months Ended 
 September 30,
 
Nine Months Ended 
 September 30,
 
2017
 
2016
 
2017
 
2016
 
 
 
 
 
 
 
 
Dividends declared
$
0.10

 
$
0.09

 
$
0.30

 
$
0.27

Dividends paid
$
0.10

 
$
0.09

 
$
0.30

 
$
0.27