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Inventories (Tables)
6 Months Ended
Jul. 31, 2013
Inventory Disclosure [Abstract]  
Inventories
 Inventories consist of:

 
July 31,
2013
July 31,
2012
January 31,
2013
(In thousands)
Finished goods $ 395,600 $ 326,420 $ 271,155
Raw materials and work-in-process 10,646 9,969 9,774
$ 406,246 $ 336,389 $ 280,929