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Note 4 - Inventories
9 Months Ended
Dec. 31, 2012
Inventory Disclosure [Text Block]
Note 4.    Inventories

Inventories, which are stated at the lower of cost (determined by means of the first in, first out method) or market, consist of the following:

   
December 31,
   
March 31,
 
   
2012
   
2012
 
Finished goods, net
  $ 26,564     $ 29,051  
Raw materials
    21,446       20,434  
Work in progress
    6,389       4,340  
                 
Total inventories, net
  $ 54,399     $ 53,825  

On a continuing basis, inventory quantities on hand are reviewed and an analysis of the provision for excess and obsolete inventory is performed based primarily on the Company’s sales history and anticipated future demand. The reserve for excess and obsolete inventory amounted to approximately $1,117 at December 31, 2012 and $1,015 at March 31, 2012.