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Note 8 - Cash Dividends (Details Textual) - USD ($) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Aug. 31, 2020 | Jun. 30, 2020 | Jun. 30, 2019
Payments of Ordinary Dividends, Common Stock |  | $ 5,276,000 | $ 5,184,000
Dividends Accrued |  | $ 63,796 | $ 28,158
Subsequent Event [Member] |  |  |
Quarterly Indicated Per Share Dividend Rate (in dollars per share) | $ 0.05 |  |
Dividends Payable, Date to be Paid | Sep. 08, 2020 |  |
Dividends Payable, Date of Record | Aug. 31, 2020 |  |

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- Definition Dividends declared but unpaid on equity securities issued by the entity during the period. + References No definition available. + Details
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- Definition The indicated per share quarterly cash dividend rate. + References No definition available. + Details
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Balance Type: | na
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- Definition Date the declared dividend will be paid, in CCYY-MM-DD format. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=121583591&loc=d3e4304-108586 + Details
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- Definition Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format. + References No definition available. + Details
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- Definition Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3291-108585 + Details
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- Details
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