Note 10 - Derivative Financial Instruments (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Feb. 28, 2014
Note 10 - Derivative Financial Instruments (Details) [Line Items]
Derivative, Amount of Hedged Item	$ 240.0
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred	$ 0.9
London Interbank Offered Rate (LIBOR) [Member]
Note 10 - Derivative Financial Instruments (Details) [Line Items]
Derivative, Lower Fixed Interest Rate Range	1.25%
Derivative, Average Fixed Interest Rate	1.67%