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Note 8 - Stockholders' Equity (Tables) | 12 Months Ended
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Aug. 31, 2019
Notes Tables |
Dividends Declared [Table Text Block] |
Declaration Date |  | Amount |  | Record Date |  | Payable Date
October 24, 2018 |  | $0.06 |  | November 7, 2018 |  | November 21, 2018
January 23, 2019 |  | $0.06 |  | February 6, 2019 |  | February 22, 2019
April 25, 2019 |  | $0.06 |  | May 9, 2019 |  | May 23, 2019
July 24, 2019 |  | $0.06 |  | August 7, 2019 |  | August 21, 2019
Declaration Date |  | Amount |  | Record Date |  | Payable Date
November 20, 2017 |  | $0.05 |  | December 8, 2017 |  | December 21, 2017
January 24, 2018 |  | $0.05 |  | February 7, 2018 |  | February 21, 2018
April 25, 2018 |  | $0.05 |  | May 9, 2018 |  | May 23, 2018
July 25, 2018 |  | $0.05 |  | August 8, 2018 |  | August 22, 2018

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- Definition Tabular disclosure of information related to dividends declared, including paid and unpaid dividends. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Period Type: | duration