Warranty Reserves

3 Months Ended

Jul. 31, 2011

Warranty Reserves [Abstract]

Warranty Reserves

Warranty Reserves

Estimated warranty costs are accrued as revenues are recognized.  Included in the warranty cost accruals are costs for basic warranties on products sold.  A summary of product warranty reserve activity for the three months ended July 31, 2011 is as follows:

(Amounts in thousands)
Balance at May 1, 2011	$	31
Additional reserves		4
Warranty reserve expense adjustments		(2)
Charges incurred		(9)
Balance at July 31, 2011	$	24