Note 9 - Exercised Stock Options (Details) - shares	12 Months Ended
	Aug. 31, 2016	Aug. 31, 2015
Exercise 1 [Member]
Options Exercised (in shares)		9.76
Exercise 2 [Member]
Options Exercised (in shares)		7.65
Exercise 3 [Member]
Options Exercised (in shares)		10.2
Options Exercised (in shares)	0	38,333