Loans - Impaired loans (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
With no related allowance recorded
Recorded Investment	$ 413	$ 1,199
Unpaid Principal Balance	413	1,199
Total
Related Allowance	11	17
Commercial real estate
With no related allowance recorded
Recorded Investment	6,234	4,771
Unpaid Principal Balance	6,249	4,786
With an allowance recorded
Recorded Investment	267	1,125
Unpaid Principal Balance	267	1,125
Related Allowance	4
Total
Recorded Investment	6,501	5,896
Unpaid Principal Balance	6,516	5,911
Related Allowance	4	9
Commercial real estate \| Owner occupied
With no related allowance recorded
Recorded Investment	4,776	2,780
Unpaid Principal Balance	4,791	2,795
With an allowance recorded
Recorded Investment	267	1,125
Unpaid Principal Balance	267	1,125
Total
Recorded Investment	5,043	3,905
Unpaid Principal Balance	5,058	3,920
Related Allowance	4	9
Commercial real estate \| Non-owner occupied
With no related allowance recorded
Recorded Investment	1,458	1,991
Unpaid Principal Balance	1,458	1,991
Total
Recorded Investment	1,458	1,991
Unpaid Principal Balance	1,458	1,991
Related Allowance	0	0
Consumer real estate
With no related allowance recorded
Recorded Investment	2,411	2,936
Unpaid Principal Balance	2,579	3,232
With an allowance recorded
Recorded Investment	146	74
Unpaid Principal Balance	146	74
Related Allowance	7	8
Total
Recorded Investment	2,557	3,010
Unpaid Principal Balance	2,725	3,306
Related Allowance	7	8
Consumer real estate \| Home equity lines
With no related allowance recorded
Recorded Investment	300	300
Unpaid Principal Balance	300	300
Total
Recorded Investment	300	300
Unpaid Principal Balance	300	300
Consumer real estate \| First deed of trust
With no related allowance recorded
Recorded Investment	1,873	1,937
Unpaid Principal Balance	1,873	1,940
With an allowance recorded
Recorded Investment	146	74
Unpaid Principal Balance	146	74
Total
Recorded Investment	2,019	2,011
Unpaid Principal Balance	2,019	2,014
Related Allowance	7	8
Consumer real estate \| Second deed of trust
With no related allowance recorded
Recorded Investment	238	699
Unpaid Principal Balance	406	992
Total
Recorded Investment	238	699
Unpaid Principal Balance	406	992
Commercial and industrial loans
With no related allowance recorded
Recorded Investment	8,830	7,848
Unpaid Principal Balance	9,013	8,159
Total
Recorded Investment	9,243	9,047
Unpaid Principal Balance	9,426	9,358
Related Allowance	11	17
Commercial and industrial loans \| Commercial and industrial loans (except those secured by real estate)
With no related allowance recorded
Recorded Investment	185	141
Unpaid Principal Balance	185	141
Total
Recorded Investment	185	141
Unpaid Principal Balance	$ 185	$ 141

Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

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