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Retirement Plans - Summary of Shares Allocations are Accounted For Fair Value on The Date of Allocations (Detail) - USD ($)
Jun. 30, 2022
Dec. 31, 2021
Retirement Benefits [Abstract]    
Number of ESOP shares allocated 247,605 247,606
Number of ESOP shares committed to be released 7,077  
Total number of ESOP allocated and committed-to-be-released 254,682 247,606
Number of non committed, unearned ESOP shares 424,621 431,697
Total number of ESOP Shares 679,303 679,303
Fair value of ESOP allocated shares $ 430,833 $ 517,496
Fair value of ESOP Committed-to-be released shares 12,314  
Total fair value of ESOP allocated and committed-to-be-released 443,147 517,496
Fair value of ESOP unallocated shares 738,840 902,247
Total fair value of ESOP Shares $ 1,181,987 $ 1,419,743