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Income taxes (Tables) | 6 Months Ended
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Jun. 30, 2025
Income Tax Disclosure [Abstract] |
Schedule of Components of Income Tax Expense | Income taxes recognized during the three and six months ended June 30, 2025 and June 30, 2024, comprise:
| Three Months Ended |  | Six Months Ended
| June 30, 2025 | June 30, 2024 |  | June 30, 2025 | June 30, 2024
| (in thousands)
Income tax (benefit) / expense | $ | (21,861) |  | $ | 23,344 |  |  | $ | (2,258) |  | $ | 51,668 |
Total | $ | (21,861) |  | $ | 23,344 |  |  | $ | (2,258) |  | $ | 51,668 |
Schedule of Unrecognized Tax Benefits Roll Forward | A reconciliation of the beginning and ending amount of total unrecognized tax benefits is as follows:
|  | Six Months Ended | Year Ended
|  | June 30, 2025 | December 31, 2024
|  | (in thousands)
Unrecognized tax benefits at start of period |  | $ | 101,619 |  | $ | 160,016 |
Increase related to prior year tax positions |  | 29,140 |  | 7,374 |
Decrease related to prior year tax positions |  | (58,824) |  | (2,525) |
Increase related to current period tax positions |  | 8,896 |  | 2,171 |
Lapse of statute of limitations |  | — |  | (65,417) |
Unrecognized tax benefits at end of period |  | $ | 80,831 |  | $ | 101,619 |

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- Definition Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-9 + Details
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- Definition Tabular disclosure of the change in unrecognized tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 217 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482663/740-10-55-217 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-15A + Details
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