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Interest expense, net
12 Months Ended
Jan. 31, 2012
Interest Expense, Net [Abstract]  
Interest Income and Interest Expense Disclosure [Text Block]
Note 12 - Interest expense, net
 
2011

2010

 
Interest expense
$2,165
$1,937
 
Interest income
(728
)
(676
)
 
Interest expense, net
$1,437
$1,261