SEGMENT AND ENTERPRISE-WIDE INFORMATION (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2017 USD ($)	Oct. 01, 2016 USD ($)	Sep. 30, 2017 USD ($) unit	Oct. 01, 2016 USD ($)
Segment Reporting [Abstract]
Number of business units | unit			4
Segment Reporting Information [Line Items]
Net Revenues, Before Foreign Exchange Impact	$ 226,194	$ 221,627	$ 440,144	$ 433,429
Effect of exchange rates	(817)	(1,374)	(3,816)	(3,220)
Net revenues (reported)	225,377	220,253	436,328	430,209
Effect of exchange rates	1,102	667	(1,099)	(639)
Restructuring and turnaround costs	(5,787)	(1,637)	(8,270)	(20,453)
Deal amortization	(6,504)	(7,006)	(12,995)	(14,081)
Impairment of assets	0	0	0	(1,315)
Operating income	24,258	24,794	40,869	16,913
Plasma [Member]
Segment Reporting Information [Line Items]
Net revenues (reported)	109,771	103,564	211,278	201,213
Blood Center [Member]
Segment Reporting Information [Line Items]
Net revenues (reported)	71,710	74,270	137,275	145,213
Cell Processing Management [Member]
Segment Reporting Information [Line Items]
Net revenues (reported)	25,764	25,955	52,100	52,031
Hemostasis Management [Member]
Segment Reporting Information [Line Items]
Net revenues (reported)	18,132	16,464	35,675	31,752
United States
Segment Reporting Information [Line Items]
Net revenues (reported)	138,779	130,843	269,831	256,543
Japan
Segment Reporting Information [Line Items]
Net revenues (reported)	16,732	21,666	31,648	36,630
Europe
Segment Reporting Information [Line Items]
Net revenues (reported)	39,133	37,606	76,355	77,973
Asia
Segment Reporting Information [Line Items]
Net revenues (reported)	28,831	28,384	54,771	55,376
Other
Segment Reporting Information [Line Items]
Net revenues (reported)	1,902	1,754	3,723	3,687
Japan
Segment Reporting Information [Line Items]
Net Revenues, Before Foreign Exchange Impact	17,164	18,991	32,396	33,557
EMEA
Segment Reporting Information [Line Items]
Net Revenues, Before Foreign Exchange Impact	43,786	45,933	86,794	91,674
North America Plasma
Segment Reporting Information [Line Items]
Net Revenues, Before Foreign Exchange Impact	85,051	78,292	162,587	151,767
All Other
Segment Reporting Information [Line Items]
Net Revenues, Before Foreign Exchange Impact	80,193	78,411	158,367	156,431
Operating Segments
Segment Reporting Information [Line Items]
Operating income	78,352	74,691	145,449	141,460
Operating Segments | Japan
Segment Reporting Information [Line Items]
Operating income	7,877	9,017	14,615	15,173
Operating Segments | EMEA
Segment Reporting Information [Line Items]
Operating income	8,239	8,577	16,810	16,853
Operating Segments | North America Plasma
Segment Reporting Information [Line Items]
Operating income	32,184	26,151	56,286	51,318
Operating Segments | All Other
Segment Reporting Information [Line Items]
Operating income	30,052	30,946	57,738	58,116
Corporate operating expenses
Segment Reporting Information [Line Items]
Corporate operating expenses	$ (42,905)	$ (41,921)
Operating income			$ 82,216	$ 88,059