Goodwill and Intangible Assets (Details) - USD ($)	3 Months Ended		6 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Mar. 31, 2023
Finite-Lived Intangible Assets [Line Items]
Amortization of Intangible Assets	$ 7,508,000	$ 6,447,000	$ 14,385,000	$ 12,982,000
Goodwill [Roll Forward]
Balance at April 1, 2023			644,629,000
Currency translation			(6,000,000)
Balance at September 30, 2023	717,572,000		717,572,000
Gross Carrying Amount	535,962,000		535,962,000		$ 488,350,000
Accumulated Amortization	(138,574,000)		(138,574,000)		(125,813,000)
Net	397,388,000		397,388,000		362,537,000
Indefinite-Lived Trademarks	45,878,000		45,878,000		46,338,000
Duff Norton Group [Member]
Goodwill [Roll Forward]
Balance at April 1, 2023			9,699,000
Balance at September 30, 2023	9,699,000		9,699,000
Trademark
Goodwill [Roll Forward]
Gross Carrying Amount	22,245,000		22,245,000		19,478,000
Accumulated Amortization	(6,997,000)		(6,997,000)		(6,315,000)
Net	15,248,000		15,248,000		13,163,000
Customer relationships
Goodwill [Roll Forward]
Gross Carrying Amount	352,085,000		352,085,000		322,658,000
Accumulated Amortization	(97,228,000)		(97,228,000)		(88,685,000)
Net	254,857,000		254,857,000		233,973,000
Unpatented Technology [Member]
Goodwill [Roll Forward]
Gross Carrying Amount	112,082,000		112,082,000		96,291,000
Accumulated Amortization	(31,409,000)		(31,409,000)		(27,945,000)
Net	80,673,000		80,673,000		68,346,000
Other
Goodwill [Roll Forward]
Gross Carrying Amount	3,672,000		3,672,000		3,585,000
Accumulated Amortization	(2,940,000)		(2,940,000)		(2,868,000)
Net	$ 732,000		$ 732,000		$ 717,000