Note 7 - Intangible Assets (Tables)

3 Months Ended

Aug. 31, 2013

Disclosure Text Block [Abstract]

		As of
		August 31, 2013							May 31, 2013
	Weighted Average Life (years)	Cost		Accumulated Amortization			Net		Cost		Accumulated Amortization			Net
Intangible assets subject to amortization:
Customer relationships	20	$	466,347		(46,306	)		420,041		465,909		(40,392	)		425,517
Existing technology / trade names	11		291,250		(51,165	)		240,085		291,250		(44,526	)		246,724
Corporate trade name	15		40,000		(5,421	)		34,579		40,000		(4,754	)		35,246
Below market leasehold interests	8		1,200		(362	)		838		1,200		(313	)		887
Deferred licensing costs	6		199		(25	)		174		99		(20	)		79
Total amortizable assets			798,996		(103,279	)		695,717		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
Intangible assets, net		$	805,146		(103,279	)		701,867		804,608		(90,005	)		714,603

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

2014	39,684
2015	52,905
2016	52,869
2017	52,713
2018	52,664
2019	48,741