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

Dividends declared but unpaid on equity securities issued by the entity during the period.

No definition available.

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- Definition

The indicated per share quarterly cash dividend rate.

+ References

No definition available.

+ Details

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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

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Balance Type:	credit
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