Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity Schedule of Dividends Declared (Details)

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Stockholders' Equity Schedule of Dividends Declared (Details) - $ / shares
3 Months Ended 9 Months Ended
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2014
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Dividends Payable [Line Items]              
Dividends Payable, Date Declared Sep. 16, 2015 Jun. 17, 2015 Mar. 18, 2015 Dec. 16, 2014 Sep. 16, 2014    
Dividends Payable, Date of Record Sep. 30, 2015 Jun. 30, 2015 Mar. 31, 2015 Dec. 30, 2014 Sep. 30, 2014    
Dividends Payable, Date to be Paid Oct. 22, 2015 Jul. 21, 2015 Apr. 21, 2015 Jan. 20, 2015 Oct. 21, 2014    
Common Stock, Dividends, Per Share, Declared $ 0.26 $ 0.26 $ 0.26 $ 0.26 $ 0.26 $ 0.78 $ 0.78