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Note 2 - Summary of Significant Accounting Policies - Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Intangible assets	$ 1,770	$ 1,770
Less accumulated amortization	(1,028)	(929)
Total	742	841
Trade Names [Member]
Intangible assets	900	900
Patents [Member]
Intangible assets	$ 870	$ 870

X

- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name Accounting Standards Codification
-Section 55
-Paragraph 40
-SubTopic 30
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-Publisher FASB
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- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
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-Section 55
-Paragraph 40
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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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-SubTopic 30
-Name Accounting Standards Codification
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-Subparagraph (a)(1)
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