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New accounting standards (Details) - USD LIBOR - USD ($)
$ in Thousands
Jun. 30, 2023
Dec. 31, 2022
Dec. 31, 2021
Loans      
Disclosure of detailed information about financial instruments [line items]      
Non-derivative financial assets $ 416,833 $ 473,643 $ 1,034,252
Borrowings and debt      
Disclosure of detailed information about financial instruments [line items]      
Non-derivative financial liabilities 12,500 62,500 222,500
Loan Commitments      
Disclosure of detailed information about financial instruments [line items]      
Non-derivative financial liabilities $ 10,000 $ 60,000 $ 63,333