Note 7 - Other Intangible Assets (Tables)

6 Months Ended

Nov. 30, 2013

Disclosure Text Block [Abstract]

			As of
			November 30, 2013							May 31, 2013
	Weighted Average Life (years)		Cost		Accumulated Amortization			Net		Cost		Accumulated Amortization			Net
Intangible assets subject to amortization:
Customer relationships		20	$	467,220		(52,052	)		415,168		465,909		(40,392	)		425,517
Existing technology / trade names		11		291,250		(58,050	)		233,200		291,250		(44,526	)		246,724
Corporate trade name		15		40,000		(6,088	)		33,912		40,000		(4,754	)		35,246
Below market leasehold interests		8		1,200		(377	)		823		1,200		(313	)		887
Deferred licensing costs		6		199		(29	)		170		99		(20	)		79
Total amortizable assets				799,869		(116,596	)		683,273		798,458		(90,005	)		708,453
Intangible assets not subject to amortization:
In-process research and development				6,150		-			6,150		6,150		-			6,150
Total non-amortizable assets				6,150		-			6,150		6,150		-			6,150
Other intangible assets, net			$	806,019		(116,596	)		689,423		804,608		(90,005	)		714,603

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

2014	$	26,455
2015		52,923
2016		52,888
2017		52,731
2018		52,682
2019		48,760