Note 2 - Acquisition - Schedule of Intangible Assets Acquired (Details) - USD ($) $ in Thousands	Oct. 31, 2024	Dec. 31, 2024
Year 1		$ 1,620
Year 2		1,486
Year 3		1,486
Year 4		1,486
Year 5		$ 1,465
Electrochem Solutions, Inc. [Member]
Estimated Fair Value	$ 10,500
Year 1	713
Year 2	713
Year 3	713
Year 4	713
Year 5	713
Electrochem Solutions, Inc. [Member] \| Trade Names [Member]
Estimated Fair Value	$ 5,300
Amortization Period (Year)	15 years
Year 1	$ 353
Year 2	353
Year 3	353
Year 4	353
Year 5	353
Electrochem Solutions, Inc. [Member] \| Customer Relationships [Member]
Estimated Fair Value	$ 5,100
Amortization Period (Year)	15 years
Year 1	$ 340
Year 2	340
Year 3	340
Year 4	340
Year 5	340
Electrochem Solutions, Inc. [Member] \| Patents and Technology [Member]
Estimated Fair Value	$ 100
Amortization Period (Year)	5 years
Year 1	$ 20
Year 2	20
Year 3	20
Year 4	20
Year 5	$ 20

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482665/350-30-50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 985
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481283/985-20-50-2

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 350
-SubTopic 30
-Name Accounting Standards Codification
-Section 55
-Paragraph 40
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482640/350-30-55-40

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482665/350-30-50-2

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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-SubTopic 20
-Name Accounting Standards Codification
-Section 50
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-URI https://asc.fasb.org/1943274/2147481283/985-20-50-2

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)(1)
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