Note 14 - Derivative Financial Instruments (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	May 31, 2014	Aug. 31, 2012	Aug. 30, 2011
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative, Notional Amount (in Dollars)			$ 320
Derivative, Lower Fixed Interest Rate Range		1.25%	1.50%
Derivative, Average Fixed Interest Rate		1.59%	1.80%
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred (in Dollars)	$ 1.1