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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+ Details

Commitments and contingencies - Additional Information (Details) $ in Millions	6 Months Ended
	Jun. 30, 2026 USD ($) Btcoin	Jun. 30, 2025 USD ($)	Jul. 06, 2026 Btcoin	Dec. 31, 2025 Btcoin
Loss Contingencies [Line Items]
Expense related to 401(k) plan \| $	$ 0.1	$ 0.1
Crypto Asset, Number of Units, Total	271			1,606
PCT Litigation
Loss Contingencies [Line Items]
Crypto Asset, Number of Units, Total	23.5
Other Accrued Liabilities \| $	$ 1.4
Loss Contingency, Management's Assessment and Process	Under the terms of the settlement, the Company agreed to pay 23.5 bitcoin in full and final satisfaction of the claims asserted, with payment due within 30 days of the agreement's effective date.
PCT Litigation \| Subsequent Event [Member]
Loss Contingencies [Line Items]
Crypto Asset, Number of Units, Total			23.5