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Inventories (Tables)
3 Months Ended
Jun. 30, 2012
Inventories [Abstract]  
Inventories
                 
    June 30,
2012
    March 31,
2012
 

Raw materials

  $ 18,785     $ 18,570  

Work in process

    6,520       6,270  

Finished goods and other

    32,535       37,406  
   

 

 

   

 

 

 
    $ 57,840     $ 62,246