Annual report pursuant to Section 13 and 15(d)

Share-Based Compensation (Summary Of The Changes In The Number Of Outstanding Phantom Stock Shares) (Details)

v2.4.0.6
Share-Based Compensation (Summary Of The Changes In The Number Of Outstanding Phantom Stock Shares) (Details)
12 Months Ended
Dec. 31, 2012
Phantom Stock Plan [Member]
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Balance of shares outstanding at December 31, 2011 422,173
Granted 111,661
Settled (61,195)
Forfeited (5,012)
Balance of shares outstanding at December 31, 2012 467,627
Director Phantom Stock Plan [Member]
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Balance of shares outstanding at December 31, 2011 50,231
Granted 10,125
Settled 0
Forfeited 0
Balance of shares outstanding at December 31, 2012 60,356
Other Phantom Stock Plan [Member]
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Granted 4,481