SEGMENT AND ENTERPRISE-WIDE INFORMATION (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jan. 01, 2022	Dec. 26, 2020	Jan. 01, 2022	Dec. 26, 2020
Segment Reporting Information [Line Items]
Net revenues before foreign exchange impact	$ 253,319	$ 234,905	$ 707,630	$ 632,960
Effect of exchange rates	1,014	494	4,909	(2,922)
Net revenues	259,769	240,371	728,194	645,434
Operating (loss) income	35,651	40,425	61,551	110,922
Effect of exchange rates	5,807	4,286	15,553	8,644
Amortization	12,151	7,805	35,930	24,204
Restructuring and turnaround costs	(5,682)	(3,143)	(20,250)	(11,583)
Integration and transaction costs	(1,860)	0	(19,218)	(3,063)
PCS2 accelerated depreciation and related costs	(897)	(1,146)	(4,790)	(4,228)
MDR and IVDR costs	(2,453)	(1,207)	(7,171)	(2,696)
Litigation-related charges	(138)	0	(1,221)	0
Gain on sale of assets	0	1,115	9,603	32,613
United States
Segment Reporting Information [Line Items]
Net revenues	167,270	147,607	460,404	382,600
Japan
Segment Reporting Information [Line Items]
Net revenues	19,916	20,854	55,949	57,330
Europe
Segment Reporting Information [Line Items]
Net revenues	41,540	41,874	126,055	123,541
Asia
Segment Reporting Information [Line Items]
Net revenues	30,434	29,050	83,157	77,602
Other
Segment Reporting Information [Line Items]
Net revenues	609	986	2,629	4,361
Service
Segment Reporting Information [Line Items]
Net revenues before foreign exchange impact	5,436	4,972	15,655	15,396
Plasma products and services
Segment Reporting Information [Line Items]
Net revenues	116,347	123,510	308,931	309,933
Blood Center products and services
Segment Reporting Information [Line Items]
Net revenues	59,440	62,787	177,118	182,687
Hospital products and services
Segment Reporting Information [Line Items]
Net revenues	83,982	54,074	242,145	152,814
Plasma
Segment Reporting Information [Line Items]
Net revenues before foreign exchange impact	96,692	102,154	250,499	249,587
Blood Center
Segment Reporting Information [Line Items]
Net revenues before foreign exchange impact	74,527	80,417	221,522	234,446
Hospital
Segment Reporting Information [Line Items]
Net revenues before foreign exchange impact	82,100	52,334	235,609	148,927
Operating Segments
Segment Reporting Information [Line Items]
Operating (loss) income	121,038	111,527	329,905	300,444
Operating Segments | Plasma
Segment Reporting Information [Line Items]
Operating (loss) income	51,405	52,673	128,964	129,846
Operating Segments | Blood Center
Segment Reporting Information [Line Items]
Operating (loss) income	34,561	36,424	103,043	108,926
Operating Segments | Hospital
Segment Reporting Information [Line Items]
Operating (loss) income	35,072	22,430	97,898	61,672
Corporate
Segment Reporting Information [Line Items]
Operating (loss) income	$ 68,013	$ 63,202	$ 204,930	$ 185,005