Product Warranty (Tables)

6 Months Ended

Oct. 31, 2018

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: 

	Six Months Ended
	October 31,
(in thousands)	2019			2018
Beginning balance at May 1	$	4,616		$	4,045
Accrual	12,539			13,205
Settlements	(12,294		)	(12,604		)
Ending balance at October 31	$	4,861		$	4,646