v3.25.4
Fair value measurements - Items Other Than Those Recognized at Fair Value on a Recurring Basis (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Financial assets    
Short-term investments $ 756,543 $ 580,026
Investments held-to-maturity 2,566,470 2,671,040
Carrying amount | Nonrecurring | Level 1    
Financial assets    
Cash and cash equivalents 1,708,936 1,998,112
Short-term investments 756,543 580,026
Carrying amount | Nonrecurring | Level 2    
Financial assets    
Securities purchased under agreements to resell 1,096,238 1,205,373
Investments held-to-maturity 2,992,052 3,240,290
Loans, net of allowance for credit losses 4,382,411 4,473,591
Financial liabilities    
Term deposits 3,941,581 4,478,257
Securities sold under agreements to repurchase 0 92,562
Long-term debt 0 98,725
Fair value | Nonrecurring | Level 1    
Financial assets    
Cash and cash equivalents 1,708,936 1,998,112
Short-term investments 756,543 580,026
Fair value | Nonrecurring | Level 2    
Financial assets    
Securities purchased under agreements to resell 1,096,238 1,205,373
Investments held-to-maturity 2,566,470 2,671,040
Loans, net of allowance for credit losses 4,367,439 4,433,872
Financial liabilities    
Term deposits 3,944,728 4,482,978
Securities sold under agreements to repurchase 0 92,562
Long-term debt 0 98,361
Appreciation / (depreciation) | Nonrecurring | Level 1    
Financial assets    
Cash and cash equivalents 0 0
Short-term investments 0 0
Appreciation / (depreciation) | Nonrecurring | Level 2    
Financial assets    
Securities purchased under agreements to resell 0 0
Investments held-to-maturity (425,582) (569,250)
Loans, net of allowance for credit losses (14,972) (39,719)
Financial liabilities    
Term deposits (3,147) (4,721)
Securities sold under agreements to repurchase 0 0
Long-term debt $ 0 $ 364