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Note 8 - Stockholders' Equity (Details Textual) - $ / shares |  |  |  | 3 Months Ended
--- | --- | --- | --- | ---
Sep. 01, 2020 | Oct. 22, 2019 | Sep. 01, 2019 | Nov. 30, 2020 | Nov. 30, 2019
Common Stock, Dividends, Per Share, Declared (in dollars per share) |  | $ 0.065 |  | $ 0 | $ 0.065
Stock Repurchased and Retired During Period, Shares (in shares) |  |  |  | 0 | 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares) |  |  |  | 419,874 | 300,770
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period (in shares) |  |  |  | 0 | 0
Stock Issued During Period, Shares, Employee Stock Purchase Plans (in shares) | 4,646 |  | 3,597 |  |
The 2019 Plan [member] | Employees [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares) |  |  |  | 419,874 | 300,770
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share) |  |  |  | $ 8.24 | $ 10.80

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- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 + Details
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