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Note 11 - Net Income Per Common Share - Reconciliation of the Earnings Per Share Computations (Details) - USD ($)	3 Months Ended
	Nov. 30, 2021	Nov. 30, 2020
Net income	$ 4,493,759	$ 1,262,399
Basic – weighted shares outstanding (in shares)	9,199,976	9,104,623
Weighted shares assumed upon exercise of stock options (in shares)	579,794	540,007
Diluted – weighted shares outstanding (in shares)	9,779,770	9,644,630
Basic net income per share: (in dollars per share)	$ 0.49	$ 0.14
Diluted net income per share: (in dollars per share)	$ 0.46	$ 0.13

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257

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