Segment reporting - Narrative (Details) $ in Thousands	6 Months Ended
Jun. 30, 2026 USD ($) segment	Jun. 30, 2025 USD ($)
Segment Reporting [Line Items]
Number of reportable segments \| segment	1
Total revenues	$ 356,682	$ 323,281
Major customer group
Segment Reporting [Line Items]
Total revenues	$ 279,417	$ 309,220
Major customer group \| Revenue benchmark \| Customer concentration risk
Segment Reporting [Line Items]
Concentration risk percentage (as a percent)	86.40%	86.70%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details

- Definition

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