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Composition of loans receivable and the allowance for loan losses (Details) - USD ($)
$ in Thousands
Mar. 31, 2023
Dec. 31, 2022
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]    
Commercial & industrial $ 232,033 $ 239,997
Commercial real estate 515,266 491,659
Residential real estate 457,506 449,652
Consumer 44,961 46,208
Totals 1,234,632 1,213,671
Allowance For Loan And Lease Losses Collectively Evaluated Loans [Member]    
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]    
Commercial & industrial 231,889 239,808
Commercial real estate 514,044 488,630
Residential real estate 456,648 447,543
Consumer 44,953 46,203
Totals 1,247,534 1,222,184
Unallocated allowance  
SEC Schedule, 12-09, Allowance, Loan and Lease Loss, Real Estate [Member]    
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]    
Commercial & industrial 4,279 1,780
Commercial real estate 5,894 7,781
Residential real estate 5,226 3,805
Consumer 610 363
Totals 16,009 14,824
Unallocated allowance   1,095
Allowance For Loan And Lease Losses Individually Evaluated Loans [Member]    
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]    
Commercial & industrial 144 189
Commercial real estate 1,222 3,029
Residential real estate 858 2,109
Consumer 8 5
Totals 2,232 5,332
Unallocated allowance  
SEC Schedule, 12-09, Allowance, Loan and Lease Loss [Member]    
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]    
Commercial & industrial
Commercial real estate 22
Residential real estate
Consumer
Totals 22
Unallocated allowance  
Allowance For Loan And Lease Losses Total Portfolio Loans [Member]    
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]    
Commercial & industrial 232,033 239,997
Commercial real estate 515,266 491,659
Residential real estate 457,506 449,652
Consumer 44,961 46,208
Totals 1,249,766 1,227,516
Unallocated allowance  
Allowance For Loan And Lease Losses Total Portfolio Allowance [Member]    
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]    
Commercial & industrial 4,279 1,780
Commercial real estate 5,894 7,803
Residential real estate 5,226 3,805
Consumer 610 363
Totals $ 16,009 14,846
Unallocated allowance   $ 1,095