Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Schedules Of Fair Market Value Of Restricted Shares) (Details)

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Stock-Based Compensation (Schedules Of Fair Market Value Of Restricted Shares) (Details) (USD $)
In Thousands
6 Months Ended
Jun. 30, 2011
Relative TSR [Member] | Restricted Share Awards [Member]
 
Grant Date Fair Value $ 1,016
Relative TSR [Member] | Unrestricted Share Awards [Member]
 
Grant Date Fair Value 1,016
Absolute TSR [Member] | Restricted Share Awards [Member]
 
Grant Date Fair Value 348
Absolute TSR [Member] | Unrestricted Share Awards [Member]
 
Grant Date Fair Value $ 348