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Loans - Composition of loan portfolio (Details) - USD ($)
$ in Thousands
Sep. 30, 2024
Dec. 31, 2023
Sep. 30, 2023
Loans      
Loans $ 239,259 $ 238,339 $ 229,682
Real estate, residential      
Loans      
Loans 81,447 74,296 73,025
Real estate, construction      
Loans      
Loans 23,239 27,353 26,907
Real estate, nonresidential      
Loans      
Loans 111,989 115,014 110,571
Commercial and industrial      
Loans      
Loans 12,136 12,496 10,831
Other      
Loans      
Loans $ 10,448 $ 9,180 $ 8,348