Note 2 - Material Accounting Policies and Basis of Preparation - Consolidated Subsidiaries (Details)	12 Months Ended
Dec. 31, 2025
Cobalt one pty [member]
Statement Line Items [Line Items]
Ownership	100.00%
Location	Australia
Cobalt Camp Refinery Ltd. [member]
Statement Line Items [Line Items]
Ownership	100.00%
Location	Canada
US Cobalt Inc. (“USCO”) [member]
Statement Line Items [Line Items]
Ownership	100.00%
Location	Canada
The 1086360 BC Ltd. [member]
Statement Line Items [Line Items]
Ownership	100.00%
Location	Canada
Idaho Cobalt Company [member]
Statement Line Items [Line Items]
Ownership	100.00%
Location	United States

The principal place of business of a subsidiary. [Refer: Principal place of business; Total for all subsidiaries [member]]

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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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