Note 1 - Organization and Summary of Significant Accounting Policies - Summary of Deferred Revenues (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Contract liabilities (deferred revenues)	$ 60	$ 37
License Fees [Member]
Contract liabilities (deferred revenues)	50	0
Non-recurring Engineering [Member]
Contract liabilities (deferred revenues)	$ 10	$ 37

Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 210
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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