Note 4 - Fair Value Measurements (Details Textual) $ in Millions	Dec. 31, 2024 USD ($)
Notes Payable, Fair Value Disclosure	$ 39

Fair value portion of notes payable.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
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-Name Accounting Standards Codification
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-Publisher FASB
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Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
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-Name Accounting Standards Codification
-Section 50
-Paragraph 2E
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-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2E

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
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Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
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-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

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