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Share-Based Compensation (Summary of Share-Based Compensation Expense) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]        
Options $ 404 $ 246 $ 741 $ 398
Restricted stock 691 597 1,302 883
Total $ 1,095 $ 843 $ 2,043 $ 1,281