Note 11 - Equity Plans - Restricted Stock Activity (Details) - Restricted Stock [Member] - $ / shares	9 Months Ended	12 Months Ended
Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Restricted Stock, Number Outstanding (in shares)	6,702	0	0
Restricted Stock, Outstanding, Weighted Average Granted Price (in dollars per share)	$ 65.65	$ 0	$ 0
Restricted Stock, Granted Shares (in shares)	21,336	10,050
Restricted Stock, Granted, Weighted Average Granted Price (in dollars per share)	$ 30.93	$ 65.65
Restricted Stock, Converted into shares (in shares)	(4,673)	0
Restricted Stock, Converted into Shares, Weighted Average Granted Price (in dollars per share)	$ 39.23	$ 0
Restricted Stock, Number Outstanding (in shares)	23,365	10,050	6,702
Restricted Stock, Outstanding, Weighted Average Granted Price (in dollars per share)	$ 39.23	$ 65.65	$ 65.65
Restricted Stock, Vested Shares (in shares)	0	0
Restricted Stock, Vested, Weighted Average Granted Price (in dollars per share)	$ 0	$ 0

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

+ Details

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

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

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

+ Details

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- Definition

Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

+ References

+ Details

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

+ References

+ Details

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- Definition

The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

+ References

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- Definition

The number of non-option equity instruments converted into shares made during the period.

+ References

No definition available.

+ Details

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards converted into shares during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

No definition available.

+ Details

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