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Compensation and Benefit Plans - Summary of ESOP Shares (Detail) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]    
Shares committed-to-be-released 96,500 48,250
Shares allocated to participants 170,145 129,270
Unallocated shares 434,251 530,751
Total 700,896 708,271
Fair value of unallocated shares $ 6,297 $ 5,578