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Earnings Per Share (Footnotes) (Details)
12 Months Ended
Dec. 31, 2016
shares
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]  
Incremental common shares attributable to share-based payment arrangements 3,217
Discontinued Operations  
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]  
Incremental common shares attributable to share-based payment arrangements 40,000