Note 6 - Written Covered Bitcoin Call Options (Details Textual)	Mar. 31, 2026 USD ($)	Dec. 31, 2025
Call Option [Member]
Derivative Liability, Current	$ 21,000
Bitcoin of Written Premiums [Member]
Crypto Asset, Number of Units	0.51462318
Bitcoin [Member]
Crypto Asset, Number of Units	69.01	0
Crypto Asset, Spot Price	$ 68,233
Bitcoin [Member] \| Call Option [Member]
Crypto Asset, Number of Units	0.31053491
Crypto Asset, Spot Price	$ 68,233

Fair value, after the 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, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483444/210-20-55-10

Name:	us-gaap_DerivativeLiabilitiesCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant