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Stock-Based Compensation (Tables)
 9 Months Ended
Sep. 30, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Changes in Capital Surplus
Changes in "Capital surplus" are primarily a result of stock compensation:
 
Quarter Ended September 30,
 
Nine Months Ended September 30,
(In thousands)
2013
 
2012
 
2013
 
2012
Stock-based compensation
$
1,713

 
$
1,302

 
$
5,541

 
$
6,700

Shares withheld for taxes
(1,508
)
 
(950
)
 
(1,840
)
 
(1,170
)
Capital surplus increase
$
205

 
$
352

 
$
3,701

 
$
5,530