Note 13 - Employee Stock Option and Retirement Plans (Details) - Summary of Share-Based Awards Available For Grant	3 Months Ended
	Nov. 30, 2013
Note 13 - Employee Stock Option and Retirement Plans (Details) - Summary of Share-Based Awards Available For Grant [Line Items]
Restricted stock awards granted*	162,000
Share-based awards canceled/forfeited*	10,000
Restricted Stock [Member] | Employee Option Plan [Member]
Note 13 - Employee Stock Option and Retirement Plans (Details) - Summary of Share-Based Awards Available For Grant [Line Items]
Restricted stock awards granted*	(404,000)	[1]
Restricted Stock [Member]
Note 13 - Employee Stock Option and Retirement Plans (Details) - Summary of Share-Based Awards Available For Grant [Line Items]
Restricted stock awards granted*	161,716
Employee Option Plan [Member] | Non-Performance Based [Member]
Note 13 - Employee Stock Option and Retirement Plans (Details) - Summary of Share-Based Awards Available For Grant [Line Items]
Granted	(36,000)
Employee Option Plan [Member] | Performance Based [Member]
Note 13 - Employee Stock Option and Retirement Plans (Details) - Summary of Share-Based Awards Available For Grant [Line Items]
Granted	(36,000)
Employee Option Plan [Member]
Note 13 - Employee Stock Option and Retirement Plans (Details) - Summary of Share-Based Awards Available For Grant [Line Items]
Balance	3,116,000
Share-based awards canceled/forfeited*	16,000	[1]
Balance	2,656,000
Non-Employee Stock Option Plan [Member]
Note 13 - Employee Stock Option and Retirement Plans (Details) - Summary of Share-Based Awards Available For Grant [Line Items]
Balance	107,000
Share-based awards canceled/forfeited*		[1]
Balance	107,000

[1] Under the Company's stock option and award plan, for each restricted stock award granted/canceled/forfeited, an equivalent of 2.5 shares is added back to or removed from the available share-based awards balance.