GOODWILL AND INTANGIBLE ASSETS Schedule of Goodwill (Details) $ in Thousands	6 Months Ended
	Sep. 30, 2023 USD ($)
Goodwill [Roll Forward]
Goodwill, carrying amount	$ 466,231
Currency translation	(826)
Goodwill, carrying amount	465,405
Plasma
Goodwill [Roll Forward]
Goodwill, carrying amount	29,043
Currency translation	0
Goodwill, carrying amount	29,043
Blood Center
Goodwill [Roll Forward]
Goodwill, carrying amount	33,855
Currency translation	(364)
Goodwill, carrying amount	33,491
Hospital
Goodwill [Roll Forward]
Goodwill, carrying amount	403,333
Currency translation	(462)
Goodwill, carrying amount	$ 402,871