Note 10 - Intangible Assets (Details) - USD ($)		3 Months Ended		9 Months Ended
	Feb. 06, 2015	May. 31, 2015	May. 31, 2014	May. 31, 2015	May. 31, 2014
Note 10 - Intangible Assets (Details) [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life				10 years 146 days
Impairment of Intangible Assets (Excluding Goodwill)				$ 0	$ 0
Amortization of Intangible Assets		$ 2,300,000	$ 2,400,000	$ 6,400,000	$ 6,200,000
Code Red, Inc. [Member]
Note 10 - Intangible Assets (Details) [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life				6 years 109 days
Finite-lived Intangible Assets Acquired	$ 8,200,000			$ 9,100,000