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Subsequent Events (Narrative) (Details)
$ / shares in Units, $ in Millions
Mar. 15, 2018
USD ($)
$ / shares
Subsequent Event [Line Items]  
Dividends Payable, Amount Per Share | $ / shares $ 0.48
Subsequent Event [Member]  
Subsequent Event [Line Items]  
Dividends Payable | $ $ 5.9
Dividends Payable, Date to be Paid May 08, 2018
Dividends Payable, Date of Record Mar. 30, 2018
Dividends Payable, Date Declared Mar. 15, 2018