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Note 15 - Equity Incentive Plans - Stock Option Activity (Details) - $ / shares	3 Months Ended	12 Months Ended
	Sep. 30, 2025	Jun. 30, 2025
Outstanding, options (in shares)	211,618
Outstanding, options, weighted average exercise price (in dollars per share)	$ 4.51
Outstanding, options, weighted average remaining contractual life (Year)		8 years 3 months 18 days
Expired, options (in shares)	(4,818)
Expired, options, weighted average exercise price (in dollars per share)	$ 9.68
Outstanding, options (in shares)	206,800	211,618
Outstanding, options, weighted average exercise price (in dollars per share)	$ 4.39	$ 4.51
Exercisable, options (in shares)	103,898
Exercisable, options, weighted average exercise price (in dollars per share)	$ 6.92
Exercisable, options, weighted average remaining contractual life (Year)	7 years 7 months 6 days

X

- Definition

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.

+ 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)(iii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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X

- Definition

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.

+ 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)(iii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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X

- Definition

Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

+ 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)(iv)(04)
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-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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X

- Definition

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

+ References

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-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
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-Subparagraph (c)(1)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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X

- Definition

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

+ 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)
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-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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X

- Definition

Weighted average price at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
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-Section 50
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- Definition

Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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