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Financing Arrangements (Tables)
12 Months Ended
Jan. 31, 2012
Financing Arrangements [Abstract]  
Future minimum lease payments under non-cancelable operating leases
Future minimum lease payments under non-cancelable operating leases are as follows:
 
 
2013
 
2014
 
2015
 
2016
 
2017
 
Thereafter
Minimum lease payments
 
$
1,467

 
$
1,305

 
$
1,141

 
$
990

 
$
201

 
$
224