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Income taxes - Narrative (Details) - USD ($) |  | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2024 | Jun. 30, 2024 | Mar. 31, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | Dec. 31, 2023
Operating Loss Carryforwards [Line Items] |  |  |  |  |  |  |
Other Tax Expense (Benefit) |  | $ 300,000 |  | $ 100,000 | $ 400,000 | $ 200,000 |
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount |  | 200,000 | $ 294,900,000 |  | 295,100,000 |  |
Income tax (benefit) expense |  | 1,333,000 |  | (3,998,000) | 299,542,000 | (12,251,000) |
Loss before income taxes |  | (46,488,000) |  | (21,210,000) | (87,367,000) | (59,332,000) |
Income tax (benefit) expense |  | 1,333,000 |  | (3,998,000) | 299,542,000 | (12,251,000) |
Loss before income taxes |  | (46,488,000) |  | (21,210,000) | (87,367,000) | (59,332,000) |
Current Foreign Tax Expense (Benefit) |  | 1,500,000 |  | 4,600,000 | 2,900,000 | 13,400,000 |
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount |  | 200,000 | $ 294,900,000 |  | 295,100,000 |  |
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions | $ (3,900,000) |  |  |  |  |  |
Unrecognized Tax Benefits | 28,100,000 | 28,100,000 |  |  | 28,100,000 |  | $ 25,800,000
Unrecognized Tax Benefits that Would Impact Effective Tax Rate | $ 13,000,000.0 | 13,000,000.0 |  |  | 13,000,000.0 |  |
Income Tax Effects Allocated Directly to Equity, Other |  | 500,000 |  | 300,000 | 3,000,000.0 | 600,000 |
Restructuring adjustments |  | $ 600,000 |  | $ 100,000 | $ 1,100,000 | $ 200,000 |

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