Note 3 - Digital Assets - Summary of Digital Assets (Details)		12 Months Ended
		Dec. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)
Non-Cash Fees (1)	[1]	(6.14)
Non-Cash Fees, fair value	[1]	$ (8,000)
Unrealized Loss on Fair Value Remeasurement, fair value		(3,519,000)	$ 0
Balance, fair value		5,395,000
Crypto Asset, Fair Value		$ 5,395,000
Bittensor (TAO) [Member]
Balance, tokens		0
Balance, fair value		$ 0
Tokens purchased, tokens		24,127.62
Crypto purchases, fair value		$ 8,736,000
Unrealized Loss on Fair Value Remeasurement, fair value		$ (3,519,000)
Balance, tokens		24,665.43	0
Balance, fair value		$ 5,395,000	$ 0
Total tokens		24,665.43
Total cost		$ 8,914,000
Crypto Asset, Fair Value		5,395,000	$ 0
Unrealized loss		3,519,000
Staked TAO [Member]
Balance, fair value		$ 5,395,000
Total tokens		24,665.43
Total cost		$ 8,914,000
Crypto Asset, Fair Value		5,395,000
Unrealized loss		$ 3,519,000
Bittensor (TAO) Staking Rewards [Member]
Tokens purchased, tokens		543.96
Crypto purchases, fair value		$ 186,000
Balance, fair value		5,395,000
Crypto Asset, Fair Value		5,395,000
Unstaked TAO [Member]
Balance, fair value		0
Total cost		0
Crypto Asset, Fair Value		0
Unrealized loss		$ 0

[1] Non-cash fees are related to custodian fees paid in tokens and a one-time setup and transfer fee for Kraken.