Document And Entity Information - shares	3 Months Ended
	Aug. 31, 2015	Oct. 13, 2015
Document and Entity Information [Abstract]
Entity Registrant Name	IMMUCOR INC
Trading Symbol	blud
Document Type	10-Q
Current Fiscal Year End Date	--05-31
Entity Common Stock, Shares Outstanding		100
Amendment Flag	false
Entity Central Index Key	0000736822
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Non-accelerated Filer
Entity Well-known Seasoned Issuer	No
Document Period End Date	Aug. 31, 2015
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	Q1