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Retirement Plans - Additional Information (Detail) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2021
Dec. 29, 2016
Defined Benefit Plan Disclosure [Line Items]            
Employer contribution for first 3% of employee contributions     100.00%      
Employer contribution for next 2% of employee contributions     50.00%      
Effective date of ceased matching employer contribution     May 16, 2020      
Percentage of first specified employee contributions     3.00%      
Percentage of next specified employee contributions     2.00%      
Contribution for retirement plan $ 16,500 $ 0 $ 68,143 $ 0    
Maximum amount allocated to purchase common stock under ESOP           $ 5,000,000.0
Total number of ESOP shares     268,836      
Fair value of ESOP released from suspense account and recognized compensation cost     $ 505,411      
Compensation cost recognized     $ 42,674 $ 65,710    
Number of non committed, unearned ESOP shares 410,467   410,467   431,697  
Fair value of unallocated ESOP shares $ 771,678   $ 771,678   $ 902,247  
Number of ESOP shares allocated 247,605   247,605   247,606  
Number of ESOP shares committed to be released 21,231   21,231      
ESOP [Member]            
Defined Benefit Plan Disclosure [Line Items]            
Number of common stock, shares purchased     682,500      
Purchased common stock, value     $ 4,900,000