SEGMENT AND ENTERPRISE-WIDE INFORMATION (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 26, 2020 USD ($)	Sep. 28, 2019 USD ($)	Sep. 26, 2020 USD ($) segment	Sep. 28, 2019 USD ($)
Segment Reporting [Abstract]
Number of business units | segment			3
Segment Reporting Information [Line Items]
Net revenues before foreign exchange impact	$ 204,455	$ 249,710	$ 398,055	$ 485,656
Effect of exchange rates	(311)	(2,420)	(3,416)	(4,781)
Net revenues	209,486	252,566	405,063	491,017
Operating (loss) income	58,782	49,739	70,497	36,437
Effect of exchange rates	3,647	2,501	4,358	5,270
Amortization	8,136	5,935	16,399	11,909
Restructuring and turnaround costs	(4,440)	(3,757)	(8,440)	(5,784)
Operating Expenses, Transaction Costs	(1,773)	0	(3,063)	0
PCS2 accelerated depreciation and related costs	(644)	(6,534)	(2,186)	(12,062)
European Medical Device Regulation costs and other	(736)	180	(1,489)	147
Impairment of assets and related costs	68	(54)	(896)	(51,220)
Gain on sale of assets	31,498	8,083	31,498	8,083
United States
Segment Reporting Information [Line Items]
Net revenues	123,984	161,880	234,993	318,255
Japan
Segment Reporting Information [Line Items]
Net revenues	19,645	20,376	36,476	35,843
Europe
Segment Reporting Information [Line Items]
Net revenues	38,648	38,074	81,667	74,827
Asia
Segment Reporting Information [Line Items]
Net revenues	26,168	30,192	48,552	58,833
Other
Segment Reporting Information [Line Items]
Net revenues	1,041	2,044	3,375	3,259
Service
Segment Reporting Information [Line Items]
Net revenues before foreign exchange impact	5,342	5,276	10,424	10,142
Plasma products and services
Segment Reporting Information [Line Items]
Net revenues	97,710	135,849	186,423	265,594
Blood Center products and services
Segment Reporting Information [Line Items]
Net revenues	59,233	65,615	119,900	125,522
Hospital products and services
Segment Reporting Information [Line Items]
Net revenues	52,543	51,102	98,740	99,901
Plasma
Segment Reporting Information [Line Items]
Net revenues before foreign exchange impact	78,718	116,381	147,433	227,144
Blood Center
Segment Reporting Information [Line Items]
Net revenues before foreign exchange impact	74,715	83,667	154,029	161,663
Hospital
Segment Reporting Information [Line Items]
Net revenues before foreign exchange impact	51,022	49,662	96,593	96,849
Operating Segments
Segment Reporting Information [Line Items]
Operating (loss) income	96,039	118,835	188,917	229,195
Operating Segments | Plasma
Segment Reporting Information [Line Items]
Operating (loss) income	40,823	56,776	77,173	110,501
Operating Segments | Blood Center
Segment Reporting Information [Line Items]
Operating (loss) income	33,757	41,208	72,502	78,927
Operating Segments | Hospital
Segment Reporting Information [Line Items]
Operating (loss) income	21,459	20,851	39,242	39,767
Corporate
Segment Reporting Information [Line Items]
Corporate expenses	$ (56,741)	$ (63,580)	$ (121,803)	$ (125,283)