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Stock Compensation (Narrative) (Details) - USD ($)
shares in Thousands, $ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
ESPP, percentage of market price for eligible employees     85.00%    
Actual percentage of target number of shares of common stock granted as Performance Stock Units         50.00%
Employees purchased common stock, shares     36 59  
Capitalized stock compensation expense $ 75 $ 66 $ 111 $ 140  
RSAs, RSUs, PSUs, And PSAs [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Unrecognized compensation costs 5,600   $ 5,600    
RSAs, RSUs, And PSUs [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Authorized from approved stock incentive plans to certain Company officers, non-employee Directors, and certain eligible employees, shares     283 326  
Aggregate market value of shares granted under approved stock incentive plans     $ 3,100 $ 3,300  
Stock Options [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Granted, Shares     290 162  
Unrecognized compensation costs $ 2,500   $ 2,500    
Expected weighted-average period for recognizing the unrecognized compensation costs, in years     2 years 2 months 12 days    
Performance Stock Awards (PSAs) [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Expected weighted-average period for recognizing the unrecognized compensation costs, in years     2 years 2 months 12 days    
Restricted Stock Units (RSUs) [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Expected weighted-average period for recognizing the unrecognized compensation costs, in years     2 years    
Restricted Stock Awards (RSAs) [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Expected weighted-average period for recognizing the unrecognized compensation costs, in years     1 year 4 months 24 days    
Performance Stock Units (PSUs) [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Expected weighted-average period for recognizing the unrecognized compensation costs, in years     1 year 2 months 12 days    
Minimum [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Percentage of target number of shares of common stock granted as Performance Stock Units     60.00% 50.00%  
Maximum [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Percentage of target number of shares of common stock granted as Performance Stock Units     150.00% 150.00%