Note 11 - Segment and Geographic Information - Total Long-lived Assets by Geographic Distribution (Details) - USD ($)	Aug. 31, 2019	Aug. 31, 2018
Total long-lived assets	$ 7,358,159	$ 7,168,826
CHINA
Total long-lived assets	337,162	205,490
Other Countries [Member]
Total long-lived assets	178,087	100,955
UNITED STATES
Total long-lived assets	$ 6,842,910	$ 6,862,381