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Commitments and Contingencies - Schedule of Commitments to Extend Credit, Standby Letters of Credit and Commercial Letters (Details) - USD ($)
Dec. 31, 2021
Dec. 31, 2020
Other Commitments [Line Items]    
Long-term line of credit $ 0 $ 0
Commercial letters of credit    
Other Commitments [Line Items]    
Long-term line of credit 771,000 955,000
Standby letters of credit    
Other Commitments [Line Items]    
Long-term line of credit 12,859,000 10,609,000
Commitments to extend credit    
Other Commitments [Line Items]    
Long-term line of credit $ 208,395,000 $ 192,916,000