Loans Portfolio (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 1,297,075	$ 1,238,283	$ 1,164,139
Percentage of loans receivable	100.00%	100.00%
Commercial | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 372,810	$ 353,243	323,809
Percentage of loans receivable	28.70%	28.50%
Commercial | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 38,084	$ 27,304	38,056
Percentage of loans receivable	3.00%	2.20%
Commercial | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 218,773	$ 196,391	181,528
Percentage of loans receivable	16.90%	15.90%
Municipal
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 41,288	$ 51,128	33,391
Percentage of loans receivable	3.20%	4.10%
Residential | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 14,813	$ 17,743	17,868
Percentage of loans receivable	1.20%	1.40%
Residential | Term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 492,455	$ 469,145	432,661
Percentage of loans receivable	37.90%	37.90%
Home Equity LIne of Credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 92,349	$ 98,469	111,302
Percentage of loans receivable	7.10%	8.00%
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 26,503	$ 24,860	$ 25,524
Percentage of loans receivable	2.00%	2.00%