SEGMENT AND ENTERPRISE-WIDE INFORMATION (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 29, 2018 USD ($)	Dec. 30, 2017 USD ($)	Dec. 29, 2018 USD ($) unit	Dec. 30, 2017 USD ($)
Segment Reporting [Abstract]
Number of business units | unit			3
Segment Reporting Information [Line Items]
Net revenues before foreign exchange impact	$ 249,798	$ 235,904	$ 721,607	$ 676,048
Effect of exchange rates	(2,442)	(1,861)	(3,323)	(5,677)
Net revenues	247,356	234,043	718,284	670,371
Effect of exchange rates	2,133	2,755	7,782	1,656
Restructuring and turnaround costs	(1,791)	(31,298)	(7,258)	(39,568)
Deal amortization	(6,131)	(6,506)	(18,667)	(19,501)
Asset impairments	0	0	(21,170)
Accelerated depreciation	(1,614)	0	(13,203)
Legal charges	(4,822)	(3,011)	(2,289)
Operating income	28,320	1,013	59,689	41,882
Plasma
Segment Reporting Information [Line Items]
Net revenues	131,823	113,098	373,078	324,376
Blood Center
Segment Reporting Information [Line Items]
Net revenues	67,155	74,227	199,881	211,502
Hospital
Segment Reporting Information [Line Items]
Net revenues	48,378	46,718	145,325	134,493
United States
Segment Reporting Information [Line Items]
Net revenues	157,457	140,840	452,523	410,671
Japan
Segment Reporting Information [Line Items]
Net revenues	17,734	17,664	52,295	49,312
Europe
Segment Reporting Information [Line Items]
Net revenues	40,977	42,189	119,075	118,544
Asia
Segment Reporting Information [Line Items]
Net revenues	29,166	30,733	89,136	85,504
Other
Segment Reporting Information [Line Items]
Net revenues	2,022	2,617	5,255	6,340
Japan
Segment Reporting Information [Line Items]
Net revenues before foreign exchange impact	18,297	18,161	52,244	50,557
EMEA
Segment Reporting Information [Line Items]
Net revenues before foreign exchange impact	42,056	44,860	123,395	126,727
North America Plasma
Segment Reporting Information [Line Items]
Net revenues before foreign exchange impact	104,163	86,545	295,392	249,132
All Other
Segment Reporting Information [Line Items]
Net revenues before foreign exchange impact	85,282	86,338	250,576	249,632
Operating Segments
Segment Reporting Information [Line Items]
Operating income	98,859	91,237	289,325	252,976
Operating Segments | Japan
Segment Reporting Information [Line Items]
Operating income	9,580	9,715	27,213	25,838
Operating Segments | EMEA
Segment Reporting Information [Line Items]
Operating income	11,427	12,633	34,926	33,157
Operating Segments | North America Plasma
Segment Reporting Information [Line Items]
Operating income	43,392	34,160	123,456	96,052
Operating Segments | All Other
Segment Reporting Information [Line Items]
Operating income	34,460	34,729	103,730	97,929
Corporate operating expenses
Segment Reporting Information [Line Items]
Corporate operating expenses	$ (58,314)	$ (52,164)	$ (174,831)	$ (150,670)