Segment financial information - Schedule of Net Assets Classified as Held for Sale (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Segment financial information
Assets held for sale-current	$ 55,596	$ 56,266
Liabilities held for sale-current	60,607	59,803
Disposal Group, Held-for-Sale, Not Discontinued Operations \| Mahipapa
Segment financial information
Property, plant and equipment, net of accumulated depreciation	46,224	46,286
Other assets	9,372	9,980
Assets held for sale-current	55,596	56,266
Long-term debt, net	52,011	51,568
Other liabilities	8,596	8,235
Liabilities held for sale-current	$ 60,607	$ 59,803

Disposal Group, Including Discontinued Operation, Long-Term Debt, Net, Current

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