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Leases - Summary of Right-of-Use Asset and Net Lease Liability (Detail) - USD ($)
$ in Thousands
Jun. 30, 2023
Dec. 31, 2022
Leases [Abstract]    
Right-of-use asset $ 179 $ 202
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Other assets Other assets
Net lease liability $ 179 $ 202
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration] Other liabilities Other liabilities