Quarterly report pursuant to Section 13 or 15(d)

Share-Based Compensation And Cash-Based Incentive Compensation (Narrative) (Details)

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Share-Based Compensation And Cash-Based Incentive Compensation (Narrative) (Details) (USD $)
In Millions, except Share data, unless otherwise specified
3 Months Ended
Mar. 31, 2011
Mar. 31, 2012
30803 - Disclosure - Share-Based And Cash-Based Incentive Compensation [Line Items]    
Common stock available for award under the Plan   2,269,745
Shares granted, grant date fair value $ 0.1  
Directors Compensation Plan [Member]
   
30803 - Disclosure - Share-Based And Cash-Based Incentive Compensation [Line Items]    
Common stock available for award under the Plan   568,783
Restricted Stock [Member]
   
30803 - Disclosure - Share-Based And Cash-Based Incentive Compensation [Line Items]    
Unrecognized share-based compensation expense   0.4
Restricted Stock Units (RSUs) [Member]
   
30803 - Disclosure - Share-Based And Cash-Based Incentive Compensation [Line Items]    
Unrecognized share-based compensation expense   12.6