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Note 7 - Income Taxes - Foreign Rate Differentials (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Foreign	$ 1,613	$ 1,927
Department for International Tax Cooperation [Member]
Statutory Tax Rate	0.00%
Foreign	$ 1,535	2,005
Inland Revenue, Hong Kong [Member]
Statutory Tax Rate	16.50%
Foreign	$ 745	665
State Administration of Taxation, China [Member]
Statutory Tax Rate	25.00%
Foreign	$ (124)	$ 48

X

- Definition

Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Publisher FASB
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Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 740
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-Paragraph 231
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
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-Subparagraph (SAB Topic 6.I.1.Q1)
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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X

- Definition

The portion of earnings or loss from continuing operations before income taxes that is attributable to foreign operations, which is defined as Income or Loss generated from operations located outside the entity's country of domicile.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
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-Name Accounting Standards Codification
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-Publisher FASB
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