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Note 9 - Intangible Assets, Net - Finite-lived Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Intangible assets, gross amount	$ 10,428	$ 10,091
Intangible assets, accumulated amortization	(6,788)	(6,411)
Intangible assets, net	3,640	3,680
Patents [Member]
Intangible assets, gross amount	10,192	9,873
Intangible assets, accumulated amortization	(6,709)	(6,355)
Intangible assets, net	3,483	3,518
Trademarks [Member]
Intangible assets, gross amount	236	218
Intangible assets, accumulated amortization	(79)	(56)
Intangible assets, net	$ 157	$ 162

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
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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
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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 30
-Name Accounting Standards Codification
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-Topic 926
-SubTopic 20
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-Section 50
-Paragraph 5
-Publisher FASB
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