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Inventories, Net
3 Months Ended
Jun. 30, 2012
Notes To Financial Statements [Abstract]  
Inventories, Net
Inventories, Net

Inventories, net are stated at the lower of cost or market. We use the last-in, first-out (“LIFO”) and first-in, first-out cost methods. An actual valuation of inventory under the LIFO method is made only at the end of the fiscal year based on the inventory levels and costs at that time. Accordingly, interim LIFO calculations are based on management’s estimates of expected year-end inventory levels and are subject to the final fiscal year-end LIFO inventory valuation. Inventory costs include material, labor, and overhead. Inventories, net consisted of the following:
 
 
 
June 30,
2012
 
March 31,
2012
Raw materials
 
$
56,881

 
$
56,525

Work in process
 
25,823

 
25,236

Finished goods
 
108,790

 
109,422

LIFO reserve
 
(15,783
)
 
(18,158
)
Reserve for excess and obsolete inventory
 
(13,626
)
 
(15,313
)
Inventories, net
 
$
162,085

 
$
157,712