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Earnings per Share (Narrative) (Details) - shares
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Earnings Per Share [Abstract]    
Convertible Preferred Stock, Shares Issuable upon Conversion The Company’s Class N preferred shares, each of which is convertible to 40 common shares, have the right to receive dividends or dividend equivalents should the Company declare dividends on its common stock.  
Class N preferred shares, each convertible to common shares 40  
Anti-dilutive common shares 5,100,000 2,200,000