Income taxes - Additional Information (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2022 |
Dec. 31, 2021 |
Dec. 31, 2020 |
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| Income Taxes [Line Items] | |||
| Swiss federal statutory rate | 8.50% | 8.50% | 8.50% |
| Corporate tax rate | 12.00% | ||
| Non-U.S NOLs | $ 37,105 | ||
| NOLs carry forwards indefinitely | 4,942 | ||
| Uncertain tax positions, interest and penalties recognized | 2 | $ 5 | $ 21 |
| Swiss Federal Tax Administration (FTA) | |||
| Income Taxes [Line Items] | |||
| Federal NOLs | 525,131 | ||
| State and Local Jurisdiction | Swiss Federal Tax Administration (FTA) | |||
| Income Taxes [Line Items] | |||
| Federal NOLs | $ 497,371 | ||
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- Definition Effective Income Tax Rate Reconciliation, Corporate Tax Rate, Percent No definition available.
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- Definition Income taxes line items. No definition available.
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible domestic operating loss carryforwards. Excludes state and local operating loss carryforwards. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible foreign operating loss carryforwards. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards that are not subject to expiration dates. No definition available.
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- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of expense for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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