Note 11 - Segment and Geographic Information - Total Long-lived Assets by Geographic Distribution (Details) - USD ($)	Feb. 28, 2021	Aug. 31, 2020
Total long-lived assets	$ 7,144,909	$ 7,110,789
CHINA
Total long-lived assets	374,648	376,088
Other Countries [Member]
Total long-lived assets	428,677	172,833
UNITED STATES
Total long-lived assets	$ 6,341,584	$ 6,561,868