Certain data with respect to loans individually evaluated for impairment - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Impaired Loans Specific Allowance Loan Balance Book [Member]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Residential	$ 3,854	$ 4,111
Home equity lines of credit	75
Residential real estate	3,929	4,111
Commercial	3,099	3,309
Construction of commercial
Farm land
Vacant land	38	41
Real estate secured	7,066	7,461
Commercial and industrial	824	93
Consumer	30	36
Totals	7,920	7,590
Impaired Loans Specific Allowance Loan Balance Note [Member]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Residential	3,972	4,190
Home equity lines of credit	75
Residential real estate	4,047	4,190
Commercial	3,148	3,335
Construction of commercial
Farm land
Vacant land	40	41
Real estate secured	7,235	7,566
Commercial and industrial	827	97
Consumer	30	36
Totals	8,092	7,699
Impaired Loans Specific Allowance Loan Balance Average [Member]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Residential	4,034	3,725
Home equity lines of credit	77	52
Residential real estate	4,111	3,777
Commercial	3,401	2,574
Construction of commercial		77
Farm land
Vacant land	40	42
Real estate secured	7,552	6,470
Commercial and industrial	422	16
Consumer	33	21
Totals	8,007	6,507
SEC Schedule, 12-09, Reserve, Impairment of Recognized Servicing Asset [Member]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Residential	383	276
Home equity lines of credit	14
Residential real estate	397	276
Commercial	270	409
Construction of commercial
Farm land
Vacant land	3	5
Real estate secured	670	690
Commercial and industrial	380	2
Consumer	18	1
Totals	1,068	693
Impaired Loans Specific Allowance Loan Income Recognized [Member]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Residential	67	162
Home equity lines of credit
Residential real estate	67	162
Commercial	104	90
Construction of commercial
Farm land
Vacant land		3
Real estate secured	171	255
Commercial and industrial	3	4
Consumer	1
Totals	175	259
Impaired Loans No Specific Allowance Loan Balance Book [Member]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Residential	1,959	2,318
Home equity lines of credit	158	105
Residential real estate	2,117	2,423
Commercial	1,298	1,024
Construction of commercial
Farm land	166	186
Vacant land	132	139
Real estate secured	3,713	3,772
Commercial and industrial	52	33
Consumer
Totals	3,765	3,805
Impaired Loans No Specific Allowance Loan Balance Note [Member]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Residential	2,335	3,081
Home equity lines of credit	507	450
Residential real estate	2,842	3,531
Commercial	1,940	1,733
Construction of commercial
Farm land	322	329
Vacant land	148	157
Real estate secured	5,252	5,750
Commercial and industrial	205	188
Consumer
Totals	5,457	5,938
Impaired Loans No Specific Allowance Loan Balance Average [Member]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Residential	1,912	2,940
Home equity lines of credit	111	391
Residential real estate	2,023	3,331
Commercial	978	1,747
Construction of commercial		39
Farm land	177	203
Vacant land	136	143
Real estate secured	3,314	5,463
Commercial and industrial	59	265
Consumer		3
Totals	3,373	5,731
Impaired Loans No Specific Allowance Loan Income Recognized [Member]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Residential	20	52
Home equity lines of credit	1
Residential real estate	21	52
Commercial	31	54
Construction of commercial
Farm land
Vacant land	7	10
Real estate secured	59	116
Commercial and industrial	2	4
Consumer
Totals	$ 61	$ 120