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Stock-Based Compensation (Narrative) (Details) - Jun. 30, 2015 - USD ($)
$ in Millions
Total
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Unrecognized stock-based compensation expense related to unvested awards, amount $ 2.5
Unrecognized stock-based compensation expense related to unvested awards, weighted-average period of recognition 2 years 1 month 7 days
Stock Options  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Common shares authorized under the 2006 Equity Plan 800,000
Awards expiration period 10 years
Stock Options | Employees  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Awards vesting period 3 years
Stock Options | Non-employee directors  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Awards vesting period 6 months
SARs  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Awards expiration period 10 years
Awards vesting period 3 years
Restricted Shares  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Total intrinsic value of awards released in period $ 1.7
Restricted Shares | Employees | Minimum  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Awards expiration period 1 year
Restricted Shares | Employees | Maximum  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Awards expiration period 3 years
Restricted Shares | Non-employee directors  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Awards expiration period 6 months
2006 Equity Plan  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Shares authorized under 2006 Equity Plan 1,081,260