Fair value measurement - Narrative (Details) - Convertible Promissory Note $ in Millions	1 Months Ended
Jul. 31, 2025 USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investment in convertible promissory note	$ 2.0
Interest rate (in percent)	10.00%

Contractual interest rate for funds borrowed, under the debt agreement.

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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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The cash outflow to acquire an agreement for an unconditional promise by the maker to pay the entity (holder) a definite sum of money at a future date. Such amount may include accrued interest receivable in accordance with the terms of the note. The note also may contain provisions including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among myriad other features and characteristics.

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