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Goodwill and Other Intangible Assets - Additional Information (Details) - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
Dec. 31, 2018
Goodwill And Other Intangible Assets [Line Items]      
Goodwill, Ending Balance $ 7,435 $ 7,435  
Finite-Lived Intangible Assets, Net, Ending Balance $ 207 366  
Core Deposits [Member]      
Goodwill And Other Intangible Assets [Line Items]      
Finite-lived intangible asset, useful life 7 years    
Finite-Lived Intangible Assets, Net, Ending Balance     $ 2,000
The Peoples Bank [Member]      
Goodwill And Other Intangible Assets [Line Items]      
Goodwill, Ending Balance $ 7,400 $ 7,400