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Loans - Summary of loan portfolio according to classification and subsequent measurement (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | --- | ---
Disclosure of detailed information about financial instruments [line items] |  |  |
Unearned interest and deferred fees | $ 0 |  |
Loans at FVTPL | 5,313 | $ 4,949 | $ 6,492
Loans at fair value through profit or loss |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Loans | 5,734,605 | 4,911,397 |
Interest receivable | 23,308 | 27,350 |
Loss allowances | (41,476) | (41,165) |
Unearned interest and deferred fees | (8,728) | (5,884) |
Loans at amortized cost | 5,707,709 | 4,891,698 |
Loans at FVTPL | 5,313 | 4,949 |
Loans, net | 5,713,022 | 4,896,647 |
At fair value through profit or loss |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Loans | 5,739,918 | 4,916,346 |
At fair value through profit or loss | Level 3 |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Loans at FVTPL | 5,300 | 4,900 |
At fair value through profit or loss | Loans at fair value through profit or loss |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Loans at FVTPL | $ 5,313 | $ 4,949 | $ 0

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