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Restructuring Charges (Tables)
 9 Months Ended
Aug. 31, 2012
2012 Restructuring Activities [Member]
  
Restructuring Cost and Reserve [Line Items]  
Summary of Restructuring Activity
A summary of activity for the 2012 restructuring actions is as follows (in thousands):

 
Excess
Facilities and
Other Costs
 
Employee Severance and Related Benefits
 
Total
Balance, December 1, 2011
$
—

 
$
—

 
$
—

Costs incurred
1,967

 
11,738

 
13,705

Cash disbursements
(597
)
 
(4,691
)
 
(5,288
)
Asset impairment
(875
)
 
—

 
(875
)
Translation adjustments and other
—

 
(13
)
 
(13
)
Balance, August 31, 2012
$
495

 
$
7,034

 
$
7,529
2010 Restructuring Activities [Member]
  
Restructuring Cost and Reserve [Line Items]  
Summary of Restructuring Activity

A summary of activity for the 2010 restructuring actions is as follows (in thousands):
 
 
Excess
Facilities and
Other Costs
 
Employee
Severance and
Related Benefits
 
Total
Balance, December 1, 2011
$
4,913

 
$
698

 
$
5,611

Cash disbursements
(2,067
)
 
(272
)
 
(2,339
)
Translation adjustments and other
110

 
5

 
115

Balance, August 31, 2012
$
2,956

 
$
431

 
$
3,387