Note A - Summary of Significant Accounting Policies - Stock Option Activity (Details) - $ / shares	12 Months Ended
Jun. 30, 2024	Jun. 30, 2023
Outstanding (in shares)	115,000	115,000
Outstanding (in dollars per share)	$ 0.26	$ 0.26
Granted (in shares)	25,432	0
Granted, weighted average exercise price (in dollars per share)	$ 0.24	$ 0
Exercised (in shares)	0	0
Exercised, weighted average exercise price (in dollars per share)	$ 0	$ 0
Cancelled (in shares)	0	0
Cancelled, weighted average exercise price (in dollars per share)	$ 0	$ 0
Outstanding (in shares)	140,432	115,000
Outstanding (in dollars per share)	$ 0.25	$ 0.26
Options exercisable (in shares)	140,432	115,000
Options exercisable, weighted average exercise price (in dollars per share)	$ 0.25	$ 0.26

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Gross number of share options (or share units) granted during the period.

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Number of options outstanding, including both vested and non-vested options.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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-Section 50
-Paragraph 2
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Number of share options (or share units) exercised during the current period.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Paragraph 2
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-Topic 210
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-Topic 718
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-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1

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