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Reconciliation of Changes in Warranty Reserve (Detail) (Warranty Reserves, USD $)
In Thousands, unless otherwise specified
12 Months Ended
Feb. 28, 2014
Feb. 28, 2013
Warranty Reserves
   
Warranty Liability [Line Items]    
Balance at Beginning of Period $ 43 $ 43
Provision for current year sales 116 125
Warranty costs incurred (114) (125)
Balance at End of Period $ 45 $ 43