DOCUMENT AND ENTITY INFORMATION - shares	6 Months Ended
	Oct. 01, 2016	Nov. 03, 2016
Document And Entity Information [Abstract]
Entity Registrant Name	HAEMONETICS CORP
Entity Central Index Key	0000313143
Current Fiscal Year End Date	--04-01
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Oct. 01, 2016
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding		51,657,694