Note 2 - Fair Value Measurements (Details Textual) $ in Millions	Sep. 30, 2025 USD ($)
Notes Payable, Fair Value Disclosure	$ 40.1

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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Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 825
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Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 825
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-11

Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 825
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Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
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Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
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Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef
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-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

+ Details