Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Unamortized Value of Awards with Market Conditions) (Details)

 v2.3.0.11
Stock-Based Compensation (Unamortized Value of Awards with Market Conditions) (Details) (USD $)
In Thousands
6 Months Ended
Jun. 30, 2011
Relative TSR [Member] | Restricted Share Awards [Member]
 
Unamortized value of shares $ 918
Relative TSR [Member] | Unrestricted Share Awards [Member]
 
Unamortized value of shares 884
Absolute TSR [Member] | Restricted Share Awards [Member]
 
Unamortized value of shares 314
Absolute TSR [Member] | Unrestricted Share Awards [Member]
 
Unamortized value of shares $ 302