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Equity Compensation (Narrative) (Details) - shares
9 Months Ended
Sep. 30, 2016
May 16, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Granted (in shares) 0  
Period for recognition of unrecognized compensation costs 2 years  
Restricted Stock    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Net award activity (in shares) 2,084,996  
Award vesting period 3 years  
Performance Shares    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Net award activity (in shares) 1,410,063  
Award requisite service period 3 years  
Performance achievement level, lower range 0.00%  
Performance achievement level, upper range 150.00%  
Performance achievement level, target range 100.00%  
Stock Options    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage 25.00%  
Expiration period 10 years  
Award vesting period 4 years  
2013 Plan    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of shares authorized   4,460,337
Weighted Average | Performance Shares    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Period for recognition of unrecognized compensation costs 3 years