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Stock-Based Compensation (Tables)
 9 Months Ended
Sep. 30, 2012
Share-based Compensation [Abstract]  
Schedule of Share-based Compensation, Activity
Changes in capital surplus are primarily a result of stock compensation:
 
Quarter ended September 30,
 
Nine months ended September 30,
(In thousands)
2012
 
2011
 
2012
 
2011
Stock-based compensation
$
1,302

 
$
4,312

 
$
6,700

 
$
12,387

Shares withheld for taxes
(950
)
 
(1,616
)
 
(1,170
)
 
(1,707
)
Capital surplus increase
$
352

 
$
2,696

 
$
5,530

 
$
10,680