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Subsequent Events (Details) - $ / shares
3 Months Ended
Feb. 20, 2018
Feb. 09, 2018
Jan. 24, 2018
Dec. 31, 2017
Dec. 31, 2016
Subsequent Event [Line Items]          
Dividends declared, in dollars per share       $ 0.04 $ 0.03
Subsequent Event [Member]          
Subsequent Event [Line Items]          
Dividends Payable, Date Declared     Jan. 24, 2018    
Dividends declared, in dollars per share     $ 0.0500    
Dividends Payable, Date to be Paid Feb. 20, 2018        
Dividends Payable, Date of Record   Feb. 09, 2018