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Property, Plant and Equipment (Tables)
12 Months Ended
Dec. 01, 2012
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment [Table Text Block]
Property, plant and equipment included the following assets at November 30, 2012 and 2011:

 
2012
 
2011
Land
$
9,326

 
$
8,763

Buildings and building fixtures
107,857

 
99,778

Machinery and equipment
372,358

 
358,763

Construction in process
20,578

 
10,799

 
510,119

 
478,103

Accumulated depreciation
(315,018
)
 
(293,111
)
 
$
195,101

 
$
184,992