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Inventories (Tables)
6 Months Ended
Aug. 31, 2012
Inventories [Abstract]  
Inventories
                 
    August 31,
2012
    February 29,
2012
 

Raw materials

  $ 21,595     $ 19,106  

Work-in-process

    6,643       6,853  

Finished goods

    7,566       7,027  
   

 

 

   

 

 

 
      35,804       32,986  

Reserves for obsolescence

    (3,795     (3,250
   

 

 

   

 

 

 
    $ 32,009     $ 29,736