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Stock Based Compensation - Schedule of Company Compensation Expense for the ESOP (Detail) - shares
Jun. 30, 2023
Dec. 31, 2022
[1]
Share-Based Payment Arrangement [Abstract]    
Allocated 39,864 29,898
Committed to be allocated 7,678 9,966
Unallocated 376,173 159,451
Total 423,715 199,315
[1] Adjusted for conversion of First Seacoast Bancorp, Inc.