XML 91 R77.htm IDEA: XBRL DOCUMENT v3.22.0.1
Off-balance sheet financial instruments - Summary of Contractual Amounts of Off-balance Sheet Commitments (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Off-balance sheet financial instruments.    
Commitments to extend credit $ 431,011 $ 336,667
Unused portions of lines of credit 64,108 55,391
Standby letters of credit 58,254 34,428
Total contractual amounts of off-balance sheet commitments $ 553,373 $ 426,486