Note 6 - Written Covered Bitcoin Call Options - Schedule of Written Covered-call Derivatives (Details) $ in Thousands		6 Months Ended
Jun. 30, 2026 USD ($)	Jun. 30, 2026 USD ($)
Losses on calls exercised in the money - Bitcoin delivered		$ (124)
Call Option [Member]
Written-call liabilities recognized at fair value	$ 41	41
Liabilities released on expiration or settlement	(32)	(32)
Written covered-call liability, June 30, 2026 (contract expiring 7/3/26, strike 63,000)	8	$ 8
Covered-call option income, net (within digital asset treasury loss, net)	93
Losses on calls exercised in the money - Bitcoin delivered	$ (124)

Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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