Loans Past Due Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Past Due [Line Items]
Loans, Current	$ 661,111	$ 633,376
Loans, Nonaccrual	2,323	816
Loans	670,244	642,461
30-59 Days [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	4,147	5,244
60-89 Days [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	1,484	1,885
90 Days and over and accruing [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	1,179	1,140
Residential Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Loans, Current	187,022	183,624
Loans, Nonaccrual	272	594
Loans	192,125	187,320
Residential Real Estate [Member] | 30-59 Days [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	2,716	1,984
Residential Real Estate [Member] | 60-89 Days [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	1,304	696
Residential Real Estate [Member] | 90 Days and over and accruing [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	811	422
Construction Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Loans, Current	68,731	52,807
Loans, Nonaccrual	29	41
Loans	69,617	55,322
Construction Real Estate [Member] | 30-59 Days [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	470	1,451
Construction Real Estate [Member] | 60-89 Days [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	19	1,023
Construction Real Estate [Member] | 90 Days and over and accruing [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	368	0
Commercial Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Loans, Current	286,795	273,778
Loans, Nonaccrual	1,998	148
Loans	289,883	276,500
Commercial Real Estate [Member] | 30-59 Days [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	940	1,703
Commercial Real Estate [Member] | 60-89 Days [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	150	153
Commercial Real Estate [Member] | 90 Days and over and accruing [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	0	718
Commercial [Member]
Financing Receivable, Past Due [Line Items]
Loans, Current	47,673	47,163
Loans, Nonaccrual	21	33
Loans	47,699	47,228
Commercial [Member] | 30-59 Days [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	0	24
Commercial [Member] | 60-89 Days [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	5	8
Commercial [Member] | 90 Days and over and accruing [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	0	0
Consumer [Member]
Financing Receivable, Past Due [Line Items]
Loans, Current	3,532	3,215
Loans, Nonaccrual	3	0
Loans	3,562	3,241
Consumer [Member] | 30-59 Days [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	21	21
Consumer [Member] | 60-89 Days [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	6	5
Consumer [Member] | 90 Days and over and accruing [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	0	0
Municipal [Member]
Financing Receivable, Past Due [Line Items]
Loans, Current	67,358	72,789
Loans, Nonaccrual	0	0
Loans	67,358	72,850
Municipal [Member] | 30-59 Days [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	0	61
Municipal [Member] | 60-89 Days [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	0	0
Municipal [Member] | 90 Days and over and accruing [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	$ 0	$ 0