SEGMENT AND ENTERPRISE-WIDE INFORMATION (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Oct. 02, 2021	Sep. 26, 2020	Oct. 02, 2021	Sep. 26, 2020
Segment Reporting Information [Line Items]
Net revenues before foreign exchange impact	$ 233,165	$ 204,455	$ 454,311	$ 398,055
Effect of exchange rates	1,781	(311)	3,895	(3,416)
Net revenues	239,897	209,486	468,425	405,063
Operating (loss) income	24,510	58,782	25,900	70,497
Effect of exchange rates	3,934	3,647	9,746	4,358
Amortization	11,400	8,136	23,779	16,399
Restructuring and turnaround costs	(4,513)	(4,440)	(14,568)	(8,440)
Integration and transaction costs	(625)	(1,773)	(17,358)	(3,063)
PCS2 accelerated depreciation and related costs	(250)	(576)	(3,893)	(3,082)
MDR and IVDR costs(2)	(2,347)	(736)	(4,718)	(1,489)
Litigation-related charges	(145)	0	(1,083)	0
Gain on sale of assets	0	31,498	9,603	31,498
United States
Segment Reporting Information [Line Items]
Net revenues	152,106	123,984	293,134	234,993
Japan
Segment Reporting Information [Line Items]
Net revenues	18,812	19,645	36,033	36,476
Europe
Segment Reporting Information [Line Items]
Net revenues	41,180	38,648	84,515	81,667
Asia
Segment Reporting Information [Line Items]
Net revenues	26,771	26,168	52,723	48,552
Other
Segment Reporting Information [Line Items]
Net revenues	1,028	1,041	2,020	3,375
Service
Segment Reporting Information [Line Items]
Net revenues before foreign exchange impact	4,951	5,342	10,219	10,424
Plasma products and services
Segment Reporting Information [Line Items]
Net revenues	102,075	97,710	192,584	186,423
Blood Center products and services
Segment Reporting Information [Line Items]
Net revenues	59,931	59,233	117,678	119,900
Hospital products and services
Segment Reporting Information [Line Items]
Net revenues	77,891	52,543	158,163	98,740
Plasma
Segment Reporting Information [Line Items]
Net revenues before foreign exchange impact	82,004	78,718	153,807	147,433
Blood Center
Segment Reporting Information [Line Items]
Net revenues before foreign exchange impact	75,259	74,715	146,995	154,029
Hospital
Segment Reporting Information [Line Items]
Net revenues before foreign exchange impact	75,902	51,022	153,509	96,593
Operating Segments
Segment Reporting Information [Line Items]
Operating (loss) income	108,042	96,039	208,867	188,917
Operating Segments | Plasma
Segment Reporting Information [Line Items]
Operating (loss) income	42,213	40,823	77,559	77,173
Operating Segments | Blood Center
Segment Reporting Information [Line Items]
Operating (loss) income	34,600	33,757	68,482	72,502
Operating Segments | Hospital
Segment Reporting Information [Line Items]
Operating (loss) income	31,229	21,459	62,826	39,242
Corporate
Segment Reporting Information [Line Items]
Corporate expenses	$ (68,186)	$ (56,741)	$ (136,917)	$ (121,803)