Note 7 - Other Intangible Assets, Net (Details) - Intangible Assets (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Aug. 31, 2014	May 31, 2014
Note 7 - Other Intangible Assets, Net (Details) - Intangible Assets [Line Items]
Intangible assets subject to amortization, cost	$ 825,672	$ 826,628
Intangible assets subject to amortization, accumulated amortization	(156,671)	(143,158)
Intangible assets subject to amortization, net	669,001	683,470
Intangible assets not subject to amortization, cost	9,400	9,400
Intangible assets not subject to amortization, net	9,400	9,400
Other intangible assets, net	835,072	836,028
Other intangible assets, net	(156,671)	(143,158)
Other intangible assets, net	678,401	692,870
In Process Research and Development [Member]
Note 7 - Other Intangible Assets, Net (Details) - Intangible Assets [Line Items]
Intangible assets not subject to amortization, cost	9,400	9,400
Intangible assets not subject to amortization, net	9,400	9,400
Customer Relationships [Member]
Note 7 - Other Intangible Assets, Net (Details) - Intangible Assets [Line Items]
Intangible assets subject to amortization, weighted average life	20 years
Intangible assets subject to amortization, cost	469,723	470,679
Intangible assets subject to amortization, accumulated amortization	(69,706)	(63,989)
Intangible assets subject to amortization, net	400,017	406,690
Other intangible assets, net	(69,706)	(63,989)
Technology-Based Intangible Assets [Member]
Note 7 - Other Intangible Assets, Net (Details) - Intangible Assets [Line Items]
Intangible assets subject to amortization, weighted average life	11 years
Intangible assets subject to amortization, cost	314,350	314,350
Intangible assets subject to amortization, accumulated amortization	(78,323)	(71,246)
Intangible assets subject to amortization, net	236,027	243,104
Other intangible assets, net	(78,323)	(71,246)
Trade Names [Member]
Note 7 - Other Intangible Assets, Net (Details) - Intangible Assets [Line Items]
Intangible assets subject to amortization, weighted average life	15 years
Intangible assets subject to amortization, cost	40,000	40,000
Intangible assets subject to amortization, accumulated amortization	(8,088)	(7,421)
Intangible assets subject to amortization, net	31,912	32,579
Other intangible assets, net	(8,088)	(7,421)
Off-Market Favorable Lease [Member]
Note 7 - Other Intangible Assets, Net (Details) - Intangible Assets [Line Items]
Intangible assets subject to amortization, weighted average life	7 years
Intangible assets subject to amortization, cost	1,200	1,200
Intangible assets subject to amortization, accumulated amortization	(477)	(449)
Intangible assets subject to amortization, net	723	751
Other intangible assets, net	(477)	(449)
Other Intangible Assets [Member]
Note 7 - Other Intangible Assets, Net (Details) - Intangible Assets [Line Items]
Intangible assets subject to amortization, weighted average life	4 years
Intangible assets subject to amortization, cost	399	399
Intangible assets subject to amortization, accumulated amortization	(77)	(53)
Intangible assets subject to amortization, net	322	346
Other intangible assets, net	$ (77)	$ (53)