Product Warranty (Tables)

6 Months Ended

Sep. 30, 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 during the six months ended September 30, 2018 and 2017:

	Six Months Ended
	September 30, 2018			September 30, 2017
	(In thousands)
Balance, beginning of period	$	6,914		$	11,058
Change in liability for warranties issued in period		1,724			218
Settlements made (in cash or in kind) during the    period		(1,730	)		(2,617	)
Balance, end of period	$	6,908		$	8,659