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				3,496	[1]						3,496
Activities with IVD Holdings Inc.				501	[1]						501
Non-cash dividend distributed				(7,680)	[1]						(7,680)
Equity of noncontrolling interest										7,300	7,300
Net loss						(27,623)	[1]			(4,654)	(32,277)
Foreign currency translation adjustments								(5,553)	[1]		(5,553)
Changes in fair value of cash flow hedges, net of tax								94	[1]		94
Balance (in shares) at Feb. 28, 2017	[1]	100
Balance at Feb. 28, 2017			[1]	$ 750,026	[1]	$ (401,702)	[1]	$ (44,866)	[1]	$ 6,969	$ 310,427

[1] Shareholders' equity of Immucor, Inc.