Product Warranty (Tables)

9 Months Ended

Jan. 31, 2019

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: 

	Nine Months Ended
	January 31,
(in thousands)	2020			2019
Beginning balance at May 1	$	4,616		$	4,045
Accrual	17,132			18,406
Settlements	(17,611		)	(18,315		)
Ending balance at January 31	$	4,137		$	4,136