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Accrued expenses and other current liabilities - Narrative (Details) - USD ($) | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
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Payables and Accruals [Abstract] |  |  |  |
Sales and other indirect tax liability | $ 0 | $ 3,400,000 |  |
Historical Tax Withholding Possible Loss |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Loss contingency accrual | 17,036,000 | $ 22,166,000 | $ 20,926,000 | $ 12,540,000
Minimum | Historical Tax Withholding Possible Loss |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Estimate of possible loss | 13,400,000 |  |  |
Maximum | Historical Tax Withholding Possible Loss |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Estimate of possible loss | $ 17,300,000 |  |  |

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