Note 6 - Other Intangible Assets (Detail) - Other Intangible Assets (USD $) In Thousands, unless otherwise specified	Feb. 29, 2012	May 31, 2011
Intangible assets - cost	$ 749,367	$ 54,133
Intangible assets - net	749,367	54,133
Cost [Member] | Developed Technology Rights [Member]
Intangible assets subject to amortization - cost	0	51,097
Cost [Member] | Existing technology and trade names [Member]
Intangible assets subject to amortization - cost	266,000	0
Cost [Member] | Trademarks and Tradenames [Member]
Intangible assets subject to amortization - cost	0	1,615
Cost [Member] | Noncompete Agreements [Member]
Intangible assets subject to amortization - cost	0	1,650
Cost [Member] | Distribution Rights [Member]
Intangible assets subject to amortization - cost	0	4,492
Cost [Member] | Deferred licensing costs [Member]
Intangible assets subject to amortization - cost	126	1,013
Cost [Member] | Corporate trade name [Member]
Intangible assets subject to amortization - cost	40,000	0
Cost [Member] | Customer Lists [Member]
Intangible assets subject to amortization - cost	450,888	5,215
Cost [Member] | Below market leasehold interests [Member]
Intangible assets subject to amortization - cost	860	0
Cost [Member] | Non-amortizable assets [Member]
Intangible assets - cost	18,000	4,919
Intangible assets - net	18,000	4,919
Cost [Member] | In-process research and development [Member]
Intangible assets not subject to amortization - cost	18,000
Intangible assets not subject to amortization - net	18,000
Cost [Member] | Other Intangible Assets [Member]
Intangible assets - cost	775,874	70,001
Intangible assets - net	775,874	70,001
Cost [Member] | Deferred licensing costs [Member]
Intangible assets not subject to amortization - cost		4,919
Intangible assets not subject to amortization - net		4,919
Cost [Member]
Intangible assets subject to amortization - cost	757,874	65,082
Accumulated Amortization [Member] | Developed Technology Rights [Member]
Intangible assets subject to amortization - accumulated amortization	0	(8,597)
Intangible assets - accumulated amortization	0	(8,597)
Accumulated Amortization [Member] | Existing technology and trade names [Member]
Intangible assets subject to amortization - accumulated amortization	(12,983)	0
Intangible assets - accumulated amortization	(12,983)	0
Accumulated Amortization [Member] | Trademarks and Tradenames [Member]
Intangible assets subject to amortization - accumulated amortization	0	(281)
Intangible assets - accumulated amortization	0	(281)
Accumulated Amortization [Member] | Noncompete Agreements [Member]
Intangible assets subject to amortization - accumulated amortization	0	(935)
Intangible assets - accumulated amortization	0	(935)
Accumulated Amortization [Member] | Distribution Rights [Member]
Intangible assets subject to amortization - accumulated amortization	0	(3,359)
Intangible assets - accumulated amortization	0	(3,359)
Accumulated Amortization [Member] | Deferred licensing costs [Member]
Intangible assets subject to amortization - accumulated amortization	0	(579)
Intangible assets - accumulated amortization	0	(579)
Accumulated Amortization [Member] | Corporate trade name [Member]
Intangible assets subject to amortization - accumulated amortization	(1,421)	0
Intangible assets - accumulated amortization	(1,421)	0
Accumulated Amortization [Member] | Customer Lists [Member]
Intangible assets subject to amortization - accumulated amortization	(12,011)	(2,117)
Intangible assets - accumulated amortization	(12,011)	(2,117)
Accumulated Amortization [Member] | Below market leasehold interests [Member]
Intangible assets subject to amortization - accumulated amortization	(92)	0
Intangible assets - accumulated amortization	(92)	0
Accumulated Amortization [Member] | Other Intangible Assets [Member]
Intangible assets subject to amortization - accumulated amortization	(26,507)	(15,868)
Intangible assets - accumulated amortization	(26,507)	(15,868)
Accumulated Amortization [Member]
Intangible assets subject to amortization - accumulated amortization	(26,507)	(15,868)
Intangible assets - accumulated amortization	(26,507)	(15,868)
Net of Accumulated Amortization [Member] | Developed Technology Rights [Member]
Intangible assets subject to amortization - net	0	42,500
Net of Accumulated Amortization [Member] | Existing technology and trade names [Member]
Intangible assets subject to amortization - net	253,017	0
Net of Accumulated Amortization [Member] | Trademarks and Tradenames [Member]
Intangible assets subject to amortization - net	0	1,334
Net of Accumulated Amortization [Member] | Noncompete Agreements [Member]
Intangible assets subject to amortization - net	0	715
Net of Accumulated Amortization [Member] | Distribution Rights [Member]
Intangible assets subject to amortization - net	0	1,133
Net of Accumulated Amortization [Member] | Deferred licensing costs [Member]
Intangible assets subject to amortization - net	126	434
Net of Accumulated Amortization [Member] | Corporate trade name [Member]
Intangible assets subject to amortization - net	38,579	0
Net of Accumulated Amortization [Member] | Customer Lists [Member]
Intangible assets subject to amortization - net	438,877	3,098
Net of Accumulated Amortization [Member] | Below market leasehold interests [Member]
Intangible assets subject to amortization - net	768	0
Net of Accumulated Amortization [Member] | Non-amortizable assets [Member]
Intangible assets - cost	18,000	4,919
Intangible assets - net	18,000	4,919
Net of Accumulated Amortization [Member] | In-process research and development [Member]
Intangible assets not subject to amortization - cost	18,000
Intangible assets not subject to amortization - net	18,000
Net of Accumulated Amortization [Member] | Other Intangible Assets [Member]
Intangible assets - cost	749,367	54,133
Intangible assets - net	749,367	54,133
Net of Accumulated Amortization [Member] | Deferred licensing costs [Member]
Intangible assets not subject to amortization - cost		4,919
Intangible assets not subject to amortization - net		4,919
Net of Accumulated Amortization [Member]
Intangible assets subject to amortization - net	$ 731,367	$ 49,214