Derivative Financial Instruments (Tables)

12 Months Ended

Mar. 31, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Notional Amounts of Outstanding Derivative Positions

	Bought (Sold)
(In thousands)	2018			2017
Japanese Yen	$	5,456		$	1,352
Euro	6,613			7,568
New Taiwan Dollar	(1,546		)	(686		)
Korean Won	(218		)	32
British Pound	(3,031		)	(1,992		)
Chinese Renminbi	2,665			995
Singapore Dollar	659			74
	$	10,598		$	7,343