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Share-Based Compensation (Summary of Grant Date Fair Value of Awards) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]    
Options $ 780 $ 657
Restricted stock 1,899 1,722
Total $ 2,679 $ 2,379