Income taxes - Schedule of provision of income taxes (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
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| Current: | |||
| Domestic | $ 11 | $ 0 | $ 0 |
| Foreign | 569 | 375 | 272 |
| Total current income tax expense | 580 | 375 | 272 |
| Deferred: | |||
| Domestic | 0 | 0 | 0 |
| Foreign | 401 | 265 | 186 |
| Total deferred income tax expense | 401 | 265 | 186 |
| Provision for income taxes | $ 981 | $ 640 | $ 458 |
| X | ||||||||||
- Definition Amount of current state, local, and federal tax expense (benefit) pertaining to income (loss) from continuing operations. No definition available.
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| X | ||||||||||
- Definition Amount of current foreign income tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of deferred state, local, and federal tax expense (benefit) pertaining to income (loss) from continuing operations. No definition available.
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| X | ||||||||||
- Definition Amount of deferred foreign income tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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