Note 6 - Written Covered Bitcoin Call Options - Schedule of Written Covered-call Derivatives (Details) (Parentheticals)	6 Months Ended
Jun. 30, 2026 $ / item
Derivative, Contract Expiration Date	Jul. 03, 2026
Derivative, Price Risk Option Strike Price (in USD per Per Share)	63,000

The strike price on the price risk option contract such as a put option or a call option.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 5
-Subparagraph (SX 210.12-13(Column A)(Footnote 3))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-5

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 5
-Subparagraph (SX 210.12-13(Column E))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-5

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Namespace Prefix:	us-gaap_
Data Type:	srt-types:perUnitItemType
Balance Type:	na
Period Type:	instant