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Equity Transactions And Stock-Based Compensation Plans Narrative (Details) (USD $)
3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Class of Stock [Line Items]    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period 68,100 127,300
Share-based Compensation Arrangement by Share-based Payment Award, Basis for Determining Award on Market Factors, Percentage 33.33% 33.33%
Share-based Compensation Arrangement by Share-based Payment Award, Basis for Determining Award on Individual Performance Factors, Percentage 66.67% 66.67%
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price $ 3.72 $ 4.40
Restricted Stock [Member]
   
Class of Stock [Line Items]    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 3 years  
Stock Options [Member]
   
Class of Stock [Line Items]    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 3 years  
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period 10 years  
Restricted Stock Units (RSUs) [Member] | Time-Based RSUs [Member]
   
Class of Stock [Line Items]    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 3 years  
Restricted Stock Units (RSUs) [Member] | Performance-Based RSUs, 2011 [Member]
   
Class of Stock [Line Items]    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period   39 months
Restricted Stock Units (RSUs) [Member] | Performance-Based RSUs, 2012 [Member]
   
Class of Stock [Line Items]    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 39 months