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Share-Based Compensation (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Common stock, par value (in dollars per share) $ 0.01   $ 0.01
Stock Options | Stock Option Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of shares authorized (in shares) 500,000.0    
Restricted Stock | Restricted Share Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Equity-based compensation $ 100 $ 19  
Compensation cost not yet recognized $ 1,600    
Shares expected to vest 2 years 10 months 24 days    
Advisor | Restricted Stock | Restricted Share Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period 4 years    
Granted (in shares)   279,365  
Forfeited (in shares)   79,805  
Share-based payment award, award vesting rights 25.00%    
Independent Directors | Restricted Stock | Restricted Share Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Maximum percent of awards as a percent of total outstanding 10.00%    
Common stock, par value (in dollars per share) $ 0.01    
Vesting period 3 years    
Vesting percentage 33.30%