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Current and long-term debt - Convertible senior notes due 2025 (Details) - USD ($)
$ in Thousands
 1 Months Ended 12 Months Ended
Dec. 01, 2022
May 31, 2022
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Jun. 30, 2021
Apr. 30, 2021
Disclosure of detailed information about borrowings [line items]              
Repurchase / repayment of convertible notes     $ 0 $ (83,968) $ 0    
Borrowings     1,588,290 1,436,224      
Interest expense on borrowings     158,286 137,123 115,983    
Non-cash accretion     0 12,718 $ 13,265    
Gross carrying amount              
Disclosure of detailed information about borrowings [line items]              
Borrowings     1,617,439 $ 1,948,592      
Convertible Senior Notes Due 2025              
Disclosure of detailed information about borrowings [line items]              
Borrowings interest rate       3.00%   3.00% 3.00%
Aggregate principal amount notes issued             $ 81,500
Borrowings, initial carrying value of liability component             193,700
Carrying amount of equity component             $ 7,700
Repurchase of notes, face amount   $ 12,300          
Repurchase / repayment of convertible notes   14,300          
Reduction of liability - convertible note   $ 14,800          
Gain (loss) on repurchase of convertible notes     $ 500        
Shares converted (in shares)     5,757,698 5,757,698      
Interest expense on borrowings       $ 5,200      
Non-cash accretion       11,300      
Accreted principal amount       $ 9,800      
Convertible Senior Notes Due 2025 | Gross carrying amount              
Disclosure of detailed information about borrowings [line items]              
Borrowings $ 198,900            
Debt converted to equity 205,100            
Unamortized deferred financing costs 2,100            
Unamortized premium 4,200            
Accrued coupon interest $ 100            
Convertible Senior Notes Due 2025 | At Maturity              
Disclosure of detailed information about borrowings [line items]              
Borrowings interest rate             8.25%
Borrowings, accreted principal amount per $1,000 principal, percent             125.30%
Convertible Senior Notes Due 2025 | March 2021 Convertible Notes Offering              
Disclosure of detailed information about borrowings [line items]              
Aggregate principal amount notes issued             $ 118,500
Convertible Senior Notes Due 2025 | June 2021 Convertible Notes Offering              
Disclosure of detailed information about borrowings [line items]              
Borrowings, issue price, percentage of par           102.25%  
Notional amount issued           $ 43,300  
Convertible Senior Notes Due 2025 | Compounds semi-annual              
Disclosure of detailed information about borrowings [line items]              
Borrowings interest rate             5.5202%