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Property, Plant and Equipment (Tables)
6 Months Ended
Sep. 30, 2012
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment
                 
    September 30,     March 31,  
    2012     2012  

Property, plant and equipment, at cost:

               

Land

  $ 21,106     $ 21,106  

Buildings and improvements

    25,319       25,111  

Machinery and equipment

    15,563       15,476  
   

 

 

   

 

 

 
      61,988       61,693  
     

Accumulated depreciation

    (12,848     (11,629
   

 

 

   

 

 

 

Property, plant and equipment, net

  $ 49,140     $ 50,064