Stock-based compensation - Stock options - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands |
6 Months Ended | |
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Jun. 30, 2026 |
Jun. 30, 2025 |
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| Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] | ||
| Proceeds from exercise of stock options | $ 96 | $ 1 |
| Employee Stock Option [Member] | ||
| Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] | ||
| Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition | 2 years 10 months 24 days | |
| Total unrecognized compensation cost | $ 13,600 | |
| Proceeds from exercise of stock options | $ 100 | $ 1 |
| Weighted average grant date fair value | $ 4.93 | $ 3.77 |
| Share- Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value | $ 40 | |
| Time Based Stock Options [Member] | ||
| Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] | ||
| Vesting period | 4 years | |
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- Definition Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of cost to be recognized for option under share-based payment arrangement. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of cash inflow from exercise of option under share-based payment arrangement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- 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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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