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Stock-Based Compensation - Schedule of Grants (Details) - shares
Dec. 31, 2016
Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Options Outstanding (in shares) 264,246 284,246
RSUs Outstanding (in shares) 755,507  
Options and RSUs Exercised (in shares) 3,315,458  
Available Shares (in shares) 614,567  
Total (in shares) 4,949,778  
2010 ECP    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Options Outstanding (in shares) 250,498  
RSUs Outstanding (in shares) 755,507  
Options and RSUs Exercised (in shares) 2,365,373  
Available Shares (in shares) 614,567  
Total (in shares) 3,985,945  
2005 LTIP    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Options Outstanding (in shares) [1] 13,748  
RSUs Outstanding (in shares) [1] 0  
Options and RSUs Exercised (in shares) [1] 950,085  
Available Shares (in shares) [1] 0  
Total (in shares) [1] 963,833  
[1] Expired June 2015