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Summary of Significant Accounting Policies (Tables)
12 Months Ended
Feb. 28, 2013
Summary of Significant Accounting Policies [Abstract]  
Summary of changes in the warranty liability
                 
    Fiscal Years Ended  
    February 28,     February 29,  
    2013     2012  
    (In thousands)  

Beginning balance

  $ 736     $ 810  

Release of warranty liability

    (294     —    

Warranty accrual

    243       217  

Labor and material

    (290     (291
   

 

 

   

 

 

 

Ending balance

  $ 395     $ 736