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Derivative financial instruments - Schedule of Notional Amounts and Carrying Amounts of Derivative Instruments (Details) - Fair value hedges - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Disclosure of detailed information about hedging instruments [line items]    
Notional amount 1,319,115 1,362,048
Carrying amount of the hedging instruments, Asset $ 10,805 $ 49,446
Carrying amount of the hedging instruments, Liability (15,863) (15,080)
Change in fair value used for calculating hedge ineffectiveness (34,538) 42,240
Ineffectiveness recognised in profit or loss 430 3,247
Carrying amount of hedged items, Asset 0 20,719
Carrying amount of hedged items , Liability (694,753) (983,924)
Accumulated amount of fair value hedge adjustments included in the carrying amount of the hedged items 18,093 (24,061)
Changes in fair value of the hedged items used to calculate hedge ineffectiveness 34,968 (38,993)
Interest rate risk    
Disclosure of detailed information about hedging instruments [line items]    
Carrying amount of the hedging instruments, Asset 10,805 11,358
Carrying amount of the hedging instruments, Liability $ (2,667) $ (790)
Interest rate risk | Loans    
Disclosure of detailed information about hedging instruments [line items]    
Notional amount   10,000
Carrying amount of the hedging instruments, Asset   $ 0
Carrying amount of the hedging instruments, Liability   (519)
Change in fair value used for calculating hedge ineffectiveness   (113)
Ineffectiveness recognised in profit or loss   7
Carrying amount of hedged items, Asset   10,664
Carrying amount of hedged items , Liability   0
Accumulated amount of fair value hedge adjustments included in the carrying amount of the hedged items   (136)
Changes in fair value of the hedged items used to calculate hedge ineffectiveness   $ 120
Interest rate risk | At amortized cost    
Disclosure of detailed information about hedging instruments [line items]    
Notional amount   10,000
Carrying amount of the hedging instruments, Asset   $ 101
Carrying amount of the hedging instruments, Liability   0
Change in fair value used for calculating hedge ineffectiveness   (109)
Ineffectiveness recognised in profit or loss   144
Carrying amount of hedged items, Asset   10,055
Carrying amount of hedged items , Liability   0
Accumulated amount of fair value hedge adjustments included in the carrying amount of the hedged items   26
Changes in fair value of the hedged items used to calculate hedge ineffectiveness   $ 253
Interest rate risk | Deposits    
Disclosure of detailed information about hedging instruments [line items]    
Notional amount 131,000 307,000
Carrying amount of the hedging instruments, Asset $ 1,235 $ 3,564
Carrying amount of the hedging instruments, Liability (164) 0
Change in fair value used for calculating hedge ineffectiveness (127) 600
Ineffectiveness recognised in profit or loss (142) 12
Carrying amount of hedged items, Asset 0 0
Carrying amount of hedged items , Liability (132,667) (236,942)
Accumulated amount of fair value hedge adjustments included in the carrying amount of the hedged items (26) (588)
Changes in fair value of the hedged items used to calculate hedge ineffectiveness $ (15) $ (588)
Interest rate risk | Securities sold under repurchase agreements at amortized cost    
Disclosure of detailed information about hedging instruments [line items]    
Notional amount 68,985  
Carrying amount of the hedging instruments, Asset $ 210  
Carrying amount of the hedging instruments, Liability (592)  
Change in fair value used for calculating hedge ineffectiveness 71  
Ineffectiveness recognised in profit or loss 14  
Carrying amount of hedged items, Asset 0  
Carrying amount of hedged items , Liability (69,443)  
Accumulated amount of fair value hedge adjustments included in the carrying amount of the hedged items (57)  
Changes in fair value of the hedged items used to calculate hedge ineffectiveness $ (57)  
Interest rate risk | Borrowings and debt    
Disclosure of detailed information about hedging instruments [line items]    
Notional amount 932,842 660,394
Carrying amount of the hedging instruments, Asset $ 9,360 $ 7,693
Carrying amount of the hedging instruments, Liability (1,911) (271)
Change in fair value used for calculating hedge ineffectiveness (5,911) 5,152
Ineffectiveness recognised in profit or loss (516) 176
Carrying amount of hedged items, Asset 0 0
Carrying amount of hedged items , Liability (319,174) (344,605)
Accumulated amount of fair value hedge adjustments included in the carrying amount of the hedged items 3,860 (1,626)
Changes in fair value of the hedged items used to calculate hedge ineffectiveness 5,395 (4,976)
Interest rate and foreign exchange risk    
Disclosure of detailed information about hedging instruments [line items]    
Carrying amount of the hedging instruments, Asset 0 38,088
Carrying amount of the hedging instruments, Liability $ (13,196) $ (14,290)
Interest rate and foreign exchange risk | Borrowings and debt    
Disclosure of detailed information about hedging instruments [line items]    
Notional amount 186,288 374,654
Carrying amount of the hedging instruments, Asset $ 0 $ 38,088
Carrying amount of the hedging instruments, Liability (13,196) (14,290)
Change in fair value used for calculating hedge ineffectiveness (28,571) 36,710
Ineffectiveness recognised in profit or loss 1,074 2,908
Carrying amount of hedged items, Asset 0 0
Carrying amount of hedged items , Liability (173,469) (402,377)
Accumulated amount of fair value hedge adjustments included in the carrying amount of the hedged items 14,316 (21,737)
Changes in fair value of the hedged items used to calculate hedge ineffectiveness $ 29,645 $ (33,802)