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Loans - Summary of information related to loans granted to shareholders (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Disclosure of detailed information about financial instruments [line items]    
Class A and B shareholder loans $ 5,713,022 $ 4,896,647
Class A and B shareholders    
Disclosure of detailed information about financial instruments [line items]    
Class A and B shareholder loans $ 467,000 $ 522,316
% Loans to class A and B shareholders over total loan portfolio 8.00% 11.00%
% Class A and B stockholders with loans over number of class A and B stockholders 10.00% 12.00%