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Share-Based Compensation (Tables)
12 Months Ended
Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Summary Of The Changes In The Number Of Outstanding Phantom Stock Shares
 
 
Employee Phantom Plans
 
Director 
Phantom
Stock Plan
 
Total
Balance of shares outstanding at December 31, 2013
 
489,657

 
67,517

 
557,174

Granted
 
62,731

 
8,220

 
70,951

Settled
 
(992
)
 

 
(992
)
Forfeited
 

 

 

Balance of shares outstanding at December 31, 2014
 
551,396

 
75,737

 
627,133

Schedule of cash payments and compensation costs
 
 
Year Ended December 31,
(In thousands)
 
2014
 
2013
 
2012
Cash payments for settled shares
 
$
2,401

 
$
1,404

 
$
1,077

Compensation costs
 
11,249

 
7,639

 
5,404

 
 
Year Ended December 31,
(In thousands)
 
2014
 
2013
 
2012
Cash payments for settled shares
 
$

 
$

 
$

Compensation costs
 
2,193

 
1,214

 
989

Schedule of Phantom Stock Liability
 
 
December 31,
(In thousands)
 
2014
 
2013
Employee Phantom Plans
 
$
29,058

 
$
20,210

Director Phantom Stock Plan
 
5,614

 
3,422

Total
 
$
34,672

 
$
23,632