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Earnings Per Share (Narrative) (Details) - shares
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Series A Preferred Stock [Member]        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Percentage of common stock if-converted Series A preferred stock (percent)     15.90%  
Series A preferred shares, number of shares issuable if converted (shares) 13,793,100   13,793,100  
Stock Options and Restricted Stock Units [Member]        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Anti-dilutive securities not included in the calculation of diluted income per share 2,200,000 600,000 800,000 1,000,000