Note 2 - Liquidity (Details Textual) - USD ($)	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation	$ 2,130,000	$ 4,316,000	$ 2,258,000
Crypto Asset, Fair Value	7,209,000
Working Capital	8,723,000
Net Income (Loss) Attributable to Parent	1,697,000	(672,000)
Cash Provided by (Used in) Investing Activity, Including Discontinued Operation	522,000	0
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation	$ (650,000)	$ (680,000)