SEGMENT AND ENTERPRISE-WIDE INFORMATION (Details) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Oct. 01, 2016 USD ($) franchise	Sep. 26, 2015 USD ($)	Oct. 01, 2016 USD ($) franchise	Sep. 26, 2015 USD ($)	Apr. 02, 2016 segment
Segment Reporting [Abstract]
Number of operating segments | segment					2
Number of franchises | franchise	4		4
Segment Reporting Information [Line Items]
Net revenues (constant currency)	$ 221,627	$ 219,492	$ 433,429	$ 430,560
Effect of exchange rates	(1,374)	201	(3,220)	2,546
Net revenues (reported)	220,253	219,693	430,209	433,106
Segment operating income (constant currency)	78,186	77,582	147,268	150,580
Corporate operating expenses (constant currency)	(45,416)	(46,275)	(93,867)	(95,526)
Non-GAAP operating income (constant currency)	32,770	31,307	53,401	55,054
Effect of exchange rates	667	1,802	(639)	3,882
Non-GAAP operating income (reported)	33,437	33,109	52,762	58,936
Restructuring and transformation costs	1,637	6,531	20,453	21,347
Deal amortization	7,006	7,399	14,081	14,804
Impairment of assets	0	0	1,315	0
Operating income	24,794	19,179	16,913	22,785
Depreciation and amortization			45,253	44,998
Plasma [Member]
Segment Reporting Information [Line Items]
Net revenues (reported)	103,564	93,036	201,213	181,563
Blood Center [Member]
Segment Reporting Information [Line Items]
Net revenues (reported)	74,270	84,235	145,213	167,318
Cell Processing Management [Member]
Segment Reporting Information [Line Items]
Net revenues (reported)	25,955	28,105	52,031	55,918
Hemostasis Management [Member]
Segment Reporting Information [Line Items]
Net revenues (reported)	16,464	14,317	31,752	28,307
United States
Segment Reporting Information [Line Items]
Net revenues (reported)	130,843	127,031	256,543	247,726
Japan
Segment Reporting Information [Line Items]
Net revenues (reported)	21,666	16,190	36,630	30,924
Europe
Segment Reporting Information [Line Items]
Net revenues (reported)	37,606	47,869	77,973	98,157
Asia
Segment Reporting Information [Line Items]
Net revenues (reported)	28,384	26,603	55,376	52,123
Other
Segment Reporting Information [Line Items]
Net revenues (reported)	1,754	2,000	3,687	4,176
Japan
Segment Reporting Information [Line Items]
Net revenues (constant currency)	18,991	19,908	33,557	37,503
Segment operating income (constant currency)	8,883	8,948	15,004	16,630
EMEA
Segment Reporting Information [Line Items]
Net revenues (constant currency)	45,933	48,198	91,674	97,009
Segment operating income (constant currency)	10,702	11,486	20,750	22,012
North America Plasma
Segment Reporting Information [Line Items]
Net revenues (constant currency)	78,292	68,606	151,767	133,049
Segment operating income (constant currency)	28,272	27,309	55,549	53,464
All Other
Segment Reporting Information [Line Items]
Net revenues (constant currency)	78,411	82,780	156,431	162,999
Segment operating income (constant currency)	$ 30,329	$ 29,839	$ 55,965	$ 58,474