Product Warranty (Tables)

12 Months Ended

Mar. 31, 2018

Guarantees And Product Warranties [Abstract]

Change in the Company's Warranty Accrual

The following table reflects the change in the Company’s warranty accrual in fiscal years 2018, 2017 and 2016.

	Fiscal Years Ended
	March 31, 2018			March 31, 2017			March 31, 2016
	(In thousands)
Balance, beginning of period	$	11,058		$	11,434		$	15,545
Change in liability for warranties issued in period		897			7,815			4,327
Settlements made (in cash or in kind) during the period		(5,041	)		(8,191	)		(8,438	)
Balance, end of period	$	6,914		$	11,058		$	11,434