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Subsequent Events (Tables)
 12 Months Ended
Dec. 31, 2021
Disclosure of events after reporting period [text block] [Abstract]  
Schedule of bank issued subordinated bonds
Series  Currency  Annual interest rate   Issuance date  Issuance amount   Maturity date
USTDW70320  UF   3.46%  01-07-22   1,065,000   01-09-28
USTDW70320  UF   3.46%  01-07-22   335,000   01-09-28
USTDW70320  UF   3.56%  01-07-22   1,800,000   01-09-28
USTDW70320  UF   3.56%  01-07-22   100,000   01-09-28