Note 11 - Segment and Geographical Information - Total Long-lived Assets by Geographic Distribution (Details) - USD ($)	Nov. 30, 2017	Aug. 31, 2017
Total long-lived assets	$ 7,235,301	$ 7,359,662
CHINA
Total long-lived assets	207,094	228,458
BRAZIL
Total long-lived assets	50,784	54,646
GERMANY
Total long-lived assets	16,619	14,171
INDIA
Total long-lived assets	13,642	14,712
UNITED STATES
Total long-lived assets	$ 6,947,162	$ 7,047,675