Consolidated Statement of Changes in Equity - USD ($) $ in Thousands, shares in Millions		Common Stock [Member]	Additional Paid-in Capital [Member]	[1]	Retained Earnings [Member]	[1]	AOCI Attributable to Parent [Member]	[1]	Noncontrolling Interest [Member]	Total
BALANCE (in shares) at May. 31, 2013	[1]	0.1
BALANCE at May. 31, 2013			$ 751,635		$ (89,007)		$ (17,922)			$ 644,706
Share-based compensation expense			1,512							1,512
Net loss					(182,257)					(182,257)
Other comprehensive loss (net of taxes):
Foreign exchange translation adjustment							4,315			4,315
Changes in fair value of cash flow hedges							340			340
BALANCE (in shares) at May. 31, 2014	[1]	0.1
BALANCE at May. 31, 2014			753,147		(271,264)		(13,267)			468,616
Other comprehensive loss (net of taxes):
Share-based compensation expense			1,512							1,512
Net loss					(182,257)					(182,257)
Share-based compensation expense			2,087							2,087
Net loss					(60,725)					(60,725)
Foreign exchange translation adjustment							(26,712)			(26,712)
Changes in fair value of cash flow hedges							415			415
BALANCE (in shares) at May. 31, 2015	[1]	0.1
BALANCE at May. 31, 2015			755,234		(331,989)		(39,564)			383,681
Other comprehensive loss (net of taxes):
Share-based compensation expense			2,087							2,087
Net loss					(60,725)					(60,725)
Share-based compensation expense			4,045							4,045
Net loss					(27,436)					(27,673)
Foreign exchange translation adjustment							(3,680)			(3,680)
Changes in fair value of cash flow hedges							249			249
BALANCE (in shares) at Feb. 29, 2016	[1]	0.1
BALANCE at Feb. 29, 2016			753,279		(359,425)		$ (42,995)		$ 5,763	350,859
Other comprehensive loss (net of taxes):
Share-based compensation expense			4,045							4,045
Net loss					$ (27,436)					(27,673)
Non-cash dividend			$ (6,000)							(6,000)
Equity of noncontrolling interest									$ 6,000	$ 6,000

[1] Shareholders’ equity of Immucor, Inc.