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Property, Plant, and Equipment, Net
12 Months Ended
Jan. 31, 2013
Notes To Financial Statements [Abstract]  
Property, Plant and Equipment Disclosure [Text Block]
Property, Plant, and Equipment, Net
A summary of property, plant, and equipment, net follows:
 
As of January 31,
2013
 
2012
Computer equipment and furniture
$
308,229

 
$
284,191

Buildings and building equipment
97,989

 
85,704

Land and improvements
21,345

 
21,179

Leasehold improvements
35,753

 
36,998

Property, plant, and equipment, gross
463,316

 
428,072

Less: accumulated depreciation and amortization
(300,914
)
 
(280,053
)
Property, plant, and equipment, net
$
162,402

 
$
148,019