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Warranty Reserves (Tables)
 3 Months Ended
May 31, 2016
Product Warranties Disclosures [Abstract]  
Changes in the warranty reserves
The following table shows changes in the warranty reserves since the end of fiscal 2016:
 
 
Warranty Reserve
 
(unaudited)
 
(in thousands)
Balance at February 29, 2016
$
2,915

Warranty costs incurred
(307
)
Additions charged to income
243

Balance at May 31, 2016
$
2,851