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Special Charges Summary of the Components of Special Charges (Tables)
 6 Months Ended
Jul. 31, 2014
Restructuring and Related Activities [Abstract]  
Schedule Of Special Charges
The following is a summary of the components of special charges:
 
Three months ended July 31,
 
Six months ended July 31,
 
2014
 
2013
 
2014
 
2013
Litigation costs
$
4,231

 
$
3,231

 
$
8,189

 
$
5,171

Employee severance and related costs
575

 
631

 
1,700

 
2,710

Other costs, net
302

 
(3
)
 
1,145

 
1

Total special charges
$
5,108

 
$
3,859

 
$
11,034

 
$
7,882