Note 9 - Stockholders' Equity (Details) - Exercised Stock Options (USD $)	12 Months Ended
	Aug. 31, 2014	Aug. 31, 2013
Note 9 - Stockholders' Equity (Details) - Exercised Stock Options [Line Items]
Options Exercised	74,000	37,040
Exercise Price	$ 7.82	$ 9.96
Options Exercised 1 [Member]
Note 9 - Stockholders' Equity (Details) - Exercised Stock Options [Line Items]
Options Exercised	60,000	25,140
Exercise Price	$ 7.65	$ 9.95
Options Exercised 2 [Member]
Note 9 - Stockholders' Equity (Details) - Exercised Stock Options [Line Items]
Options Exercised	14,000	4,000
Exercise Price	$ 8.57	$ 12.84
Options Exercised 3 [Member]
Note 9 - Stockholders' Equity (Details) - Exercised Stock Options [Line Items]
Options Exercised		4,000
Exercise Price		$ 8.57
Options Exercised 4 [Member]
Note 9 - Stockholders' Equity (Details) - Exercised Stock Options [Line Items]
Options Exercised		1,734
Exercise Price		$ 7.65
Options Exercised 5 [Member]
Note 9 - Stockholders' Equity (Details) - Exercised Stock Options [Line Items]
Options Exercised		1,500
Exercise Price		$ 9.76
Options Exercised 6 [Member]
Note 9 - Stockholders' Equity (Details) - Exercised Stock Options [Line Items]
Options Exercised		666
Exercise Price		$ 7.75