Note 3 - Digital Assets (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization	$ 1,423,000	$ 2,047,000
Gross Profit	1,014,000	331,000
Crypto Asset, Unrealized Gain (Loss), Nonoperating	(3,519,000)	0
Crypto Asset, Fair Value	5,395,000
Digital Assets [Member]
Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization	24,000
Gross Profit	$ 162,000
Gross Profit, Percentage	87.00%
Bittensor (TAO) [Member]
Percentage of Treasury Invested in Crypto Assets	70.00%
Crypto Asset, Unrealized Gain (Loss), Nonoperating	$ (3,519,000)
Crypto Asset, Fair Value	$ 5,395,000	$ 0