Product Warranty (Tables)

3 Months Ended

Jul. 31, 2014

Product Warranties Disclosures [Abstract]

Schedule Of Warranty Liability

The following is a reconciliation of the Company’s warranty liability, which is included in other accrued expenses on the balance sheet: 

	Three Months Ended
	July 31,
(in thousands)	2014			2013
Beginning balance at May 1	$	1,910		$	1,795
Accrual	3,938			2,546
Settlements	(3,362		)	(2,596		)
Ending balance at July 31	$	2,486		$	1,745