Consolidated Statement of Changes In Equity (Current Period Unaudited) - USD ($) $ in Thousands		Common Stock [Member]	Additional Paid-in Capital [Member]		Retained Earnings [Member]		AOCI Attributable to Parent [Member]		Noncontrolling Interest [Member]	Total
Balance (in shares) at May. 31, 2015	[1]	100
Balance at May. 31, 2015			$ 755,234	[1]	$ (331,989)	[1]	$ (39,564)	[1]		$ 383,681
Share-based compensation expense			5,326	[1]						5,326
Activities with IVD Holdings Inc.			(851)	[1]						(851)
Non-cash dividend distributed			(6,000)	[1]						(6,000)
Equity of noncontrolling interest									6,000	6,000
Net loss					(42,090)	[1]			(1,677)	(43,767)
Foreign currency translation adjustments							(174)	[1]		(174)
Changes in fair value of cash flow hedges, net of tax							331	[1]		331
Balance (in shares) at May. 31, 2016	[1]	100
Balance at May. 31, 2016			753,709	[1]	(374,079)	[1]	(39,407)	[1]	4,323	344,546
Share-based compensation expense			2,472	[1]						2,472
Activities with IVD Holdings Inc.			501	[1]						501
Non-cash dividend distributed			(4,530)	[1]						(4,530)
Equity of noncontrolling interest									4,200	4,200
Net loss					(19,872)	[1]			(2,986)	(22,858)
Foreign currency translation adjustments							(6,483)	[1]		(6,483)
Changes in fair value of cash flow hedges, net of tax							94	[1]		94
Balance (in shares) at Nov. 30, 2016	[1]	100
Balance at Nov. 30, 2016			$ 752,152	[1]	$ (393,951)	[1]	$ (45,796)	[1]	$ 5,537	$ 317,942

[1] Shareholders' equity of Immucor, Inc.