Goodwill and Intangible Assets (Details) - USD ($) $ in Thousands	9 Months Ended
	Dec. 31, 2017	Mar. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Goodwill, Purchase Accounting Adjustments	$ (244)
Goodwill [Roll Forward]
Balance at April 1, 2017	319,299
Currency translation	22,564
Balance at December 31, 2017	341,619
Gross Carrying Amount	299,838	$ 279,197
Accumulated Amortization	(36,485)	(23,014)
Net	263,353	256,183
Indefinite-Lived Trademarks	48,313	46,018
Trademark
Goodwill [Roll Forward]
Gross Carrying Amount	5,733	5,151
Accumulated Amortization	(3,140)	(2,616)
Net	2,593	2,535
Indefinite-lived Intangible Assets [Member]
Goodwill [Roll Forward]
Accumulated Amortization	0	0
Customer relationships
Goodwill [Roll Forward]
Gross Carrying Amount	194,895	177,983
Accumulated Amortization	(24,526)	(14,873)
Net	170,369	163,110
Unpatented Technology [Member]
Goodwill [Roll Forward]
Gross Carrying Amount	46,910	46,574
Accumulated Amortization	(6,794)	(4,603)
Net	40,116	41,971
Other
Goodwill [Roll Forward]
Gross Carrying Amount	3,987	3,471
Accumulated Amortization	(2,025)	(922)
Net	$ 1,962	$ 2,549