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Inventories (Tables)
9 Months Ended
Oct. 31, 2015
Inventory Disclosure [Abstract]  
Summary of Inventory Balances
Inventory balances at October 31, 2015 and January 31, 2015 were as follows (dollars in thousands):
 
 
 
October 31, 2015
 
January 31, 2015
Inventories (at FIFO)
 
$
232,123

 
$
192,605

LIFO reserve
 
(4,877
)
 
(4,645
)
Net inventories
 
$
227,246

 
$
187,960