Note 8 - Other Intangible Assets, Net (Tables)

3 Months Ended

Aug. 31, 2015

Disclosure Text Block [Abstract]

Schedule of Intangible Assets and Goodwill [Table Text Block]

			As of
			August 31, 2015							May 31, 2015
	Weighted Average Life (years)		Cost		Accumulated Amortization			Net		Cost		Accumulated Amortization			Net
Other intangible assets subject to amortization:
Customer relationships		19	$	462,639		(91,868	)		370,771		462,534		(86,052	)		376,482
Existing technology / trade names		11		315,004		(106,645	)		208,359		314,850		(99,565	)		215,285
Corporate trade name		15		40,000		(10,754	)		29,246		40,000		(10,088	)		29,912
Below market leasehold interests		7		1,200		(576	)		624		1,200		(557	)		643
Other intangibles		4		429		(183	)		246		428		(156	)		272
Total amortizable assets				819,272		(210,026	)		609,246		819,012		(196,418	)		622,594
Intangible assets not subject to amortization:
In-process research and development				27,700		-			27,700		27,700		-			27,700
Total non-amortizable assets				27,700		-			27,700		27,700		-			27,700
Other intangible assets, net			$	846,972		(210,026	)		636,946		846,712		(196,418	)		650,294

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

Year Ending May 31:
2016	$	40,813
2017		54,261
2018		54,147
2019		50,223
2020		49,115
2021		49,089