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Income taxes - Income (loss) before income tax (expense) benefit (Details) $ in Thousands, € in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Jul. 30, 2021 USD ($) | Jul. 30, 2021 EUR (€)
Loss before income taxes |  |  |  |  |
Unrecognized Tax Benefits | $ 0 | $ 0 |  |  |
Dutch operations | (96,872) | 348,400 | $ (130,493) |  |
(Loss) / income before income tax benefit / (expense) | (128,259) | 332,806 | (141,443) |  |
Current tax expense |  |  |  |  |
Total current tax (expense) | (24) | (7) |  |  |
Deferred tax benefit / (expense) |  |  |  |  |
Dutch operations | (808) | (3,047) |  |  |
Total deferred tax benefit / (expense) | 1,494 | (3,210) | 16,419 |  |
Total income tax benefit / (expense) | 1,470 | (3,217) | 16,419 |  |
Acquisition of Corlieve |  |  |  |  |
Loss before income taxes |  |  |  |  |
Deferred tax liability, net |  |  |  | $ 14,200 | € 11.9
U.S. operations |  |  |  |  |
Loss before income taxes |  |  |  |  |
Loss before income tax benefit / (expense) | (14,934) | (12,737) | (10,950) |  |
Deferred tax benefit / (expense) |  |  |  |  |
Deferred tax benefit / (expense) | (1,075) | (771) | $ 16,419 |  |
Other |  |  |  |  |
Loss before income taxes |  |  |  |  |
Loss before income tax benefit / (expense) | (16,453) | (2,857) |  |  |
Current tax expense |  |  |  |  |
Current tax (expense) | (24) | (7) |  |  |
Deferred tax benefit / (expense) |  |  |  |  |
Deferred tax benefit / (expense) | $ 3,377 | $ 608 |  |  |

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