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Financial instruments fair value - Schedule of Carrying Values and Estimated Fair Values of Debt Instruments (Details) - 2026 Notes - Convertible Debt - USD ($)
$ in Thousands
Sep. 30, 2025
Dec. 31, 2024
Net Carrying Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt, fair value $ 371,413 $ 369,514
Estimated Fair Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt, fair value $ 359,267 $ 341,981