Convertible notes payable - Schedule of fair value, net derivative liability, unobservable input reconciliation (Details)	Dec. 31, 2025
Measurement Input, Probability Of Triggering Events
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability, measurement input	0.0161
Minimum \| Measurement Input, Bond Yields
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability, measurement input	0.1623
Maximum \| Measurement Input, Bond Yields
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability, measurement input	0.1628

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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