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Common Stock and Dividends
 9 Months Ended
Sep. 30, 2018
Stockholders' Equity Note [Abstract]  
Common Stock and Dividends Common Stock and Dividends
 
  Dividends declared and paid on a per share basis were as follows:
 
Three Months Ended
September 30, 		Nine Months Ended
September 30, 
2018201720182017
Dividends declared
$0.11 $0.10 $0.33 $0.30 
Dividends paid
$0.11 $0.10 $0.33 $0.30 

On October 1, 2018, the Company announced that its Board of Directors had declared a quarterly cash dividend of $0.11 per share, which was paid on October 26, 2018, to shareholders of record at the close of business on October 15, 2018.