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Stock Based Compensation - Schedule of Company Compensation Expense for the ESOP (Detail) - shares
Sep. 30, 2024
Dec. 31, 2023
Share-Based Payment Arrangement [Abstract]    
Allocated 55,218 39,864
Committed to be allocated 11,517 15,354
Unallocated 356,980 368,497
Total 423,715 423,715