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Goodwill and Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Mar. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Amortization of Intangible Assets	$ 3,192	$ 3,226	$ 6,307	$ 6,479
Goodwill [Roll Forward]
Balance at April 1, 2020			319,679
Currency translation			11,180
Balance at September 30, 2020	330,859		330,859
Gross Carrying Amount	292,733		292,733		$ 282,380
Accumulated Amortization	(73,299)		(73,299)		(64,418)
Net	219,434		219,434		217,962
Indefinite-Lived Trademarks	47,841		47,841		46,670
Trademark
Goodwill [Roll Forward]
Gross Carrying Amount	6,372		6,372		6,016
Accumulated Amortization	(4,616)		(4,616)		(4,238)
Net	1,756		1,756		1,778
Indefinite-lived Intangible Assets [Member]
Goodwill [Roll Forward]
Accumulated Amortization	0		0		0
Customer relationships
Goodwill [Roll Forward]
Gross Carrying Amount	188,337		188,337		179,882
Accumulated Amortization	(51,007)		(51,007)		(44,216)
Net	137,330		137,330		135,666
Unpatented Technology [Member]
Goodwill [Roll Forward]
Gross Carrying Amount	46,841		46,841		46,669
Accumulated Amortization	(14,766)		(14,766)		(13,306)
Net	32,075		32,075		33,363
Other
Goodwill [Roll Forward]
Gross Carrying Amount	3,342		3,342		3,143
Accumulated Amortization	(2,910)		(2,910)		(2,658)
Net	$ 432		$ 432		$ 485