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Share-based Compensation (Summary of Stock Option Activity) (Details) - Equity Option [Member] - $ / shares
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Shares, Outstanding and Exercisable, Beginning of Period 7,500 18,750
Shares, Granted 0 0
Shares, Canceled 0 0
Shares, Exercised (7,500) (11,250)
Shares, Outstanding and Exercisable, End of Period 0 7,500
Weighted Average Exercise Price, Exercised $ 9.08 $ 11.67