Note 2 - Liquidity and Going Concern (Details Textual) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Revenue from Contract with Customer, Excluding Assessed Tax	$ 33	$ 6	$ 55	$ 14
Net Income (Loss) Available to Common Stockholders, Basic	(5,479)	$ (13,308)	(12,467)	4,386
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation			(5,283)	$ (2,759)
Working Capital (Deficit)	800		800
Maximum [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 100		$ 100

Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) available to common shareholders.

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+ Details

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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