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Related Party Transactions - Additional Information (Detail) - USD ($)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Executive Officers Directors And Affiliated Entities [Member]    
Related Party Transaction [Line Items]    
Aggregate loans amount outstanding $ 642,640 $ 648,806
New loans and credit line advance to related parties 50,971 146,025
Deposits account maintained by bank 2,300,000 1,400,000
Directors And Officers [Member]    
Related Party Transaction [Line Items]    
Repayments of loans $ 57,137 $ 357,065