Warranty Reserves (Tables)

9 Months Ended

Nov. 30, 2012

Product Warranties Disclosures [Abstract]

Changes in the warranty reserves

The following table shows changes in the warranty reserves since the end of fiscal 2012:

	Warranty Reserve
	(unaudited)
	(in thousands)
Balance at February 29, 2012	$	1,670
Warranty costs incurred	(754		)
Additions charged to income	355
Balance at May 31, 2012	$	1,271
Warranty costs incurred	(368		)
Additions charged to income	615
Balance at August 31, 2012	$	1,518
Warranty costs incurred	(470		)
Additions charged to income	253
Balance at November 30, 2012	$	1,301