Loans and allowance for loan losses - Average recorded investment in impaired loans (Details) - USD ($)
$ in Thousands |
3 Months Ended |
6 Months Ended |
Jun. 30, 2021 |
Jun. 30, 2021 |
| With no related allowance recorded |
|
|
| Average Recorded Investment |
$ 10,563
|
$ 9,176
|
| Interest Income Recognized |
103
|
233
|
| With an allowance recorded |
|
|
| Average Recorded Investment |
151
|
743
|
| Interest Income Recognized |
1
|
23
|
| Total |
|
|
| Average Recorded Investment |
10,714
|
9,919
|
| Interest Income Recognized |
104
|
256
|
| Construction and land development |
|
|
| With no related allowance recorded |
|
|
| Average Recorded Investment |
|
72
|
| Total |
|
|
| Average Recorded Investment |
|
98
|
| Construction and land development | Commercial [Member] |
|
|
| With no related allowance recorded |
|
|
| Average Recorded Investment |
|
72
|
| Total |
|
|
| Average Recorded Investment |
|
98
|
| Commercial real estate |
|
|
| With no related allowance recorded |
|
|
| Average Recorded Investment |
7,095
|
5,935
|
| Interest Income Recognized |
67
|
155
|
| With an allowance recorded |
|
|
| Average Recorded Investment |
|
562
|
| Interest Income Recognized |
|
15
|
| Total |
|
|
| Average Recorded Investment |
7,095
|
6,497
|
| Interest Income Recognized |
67
|
170
|
| Commercial real estate | Commercial [Member] |
|
|
| With an allowance recorded |
|
|
| Average Recorded Investment |
|
26
|
| Commercial real estate | Owner occupied |
|
|
| With no related allowance recorded |
|
|
| Average Recorded Investment |
5,211
|
4,073
|
| Interest Income Recognized |
38
|
96
|
| With an allowance recorded |
|
|
| Average Recorded Investment |
|
562
|
| Interest Income Recognized |
|
15
|
| Total |
|
|
| Average Recorded Investment |
5,211
|
4,635
|
| Interest Income Recognized |
38
|
111
|
| Commercial real estate | Non-Owner Occupied [Member] |
|
|
| With no related allowance recorded |
|
|
| Average Recorded Investment |
1,884
|
1,862
|
| Interest Income Recognized |
29
|
59
|
| Total |
|
|
| Average Recorded Investment |
1,884
|
1,862
|
| Interest Income Recognized |
29
|
59
|
| Consumer real estate |
|
|
| With no related allowance recorded |
|
|
| Average Recorded Investment |
3,266
|
2,996
|
| Interest Income Recognized |
35
|
77
|
| With an allowance recorded |
|
|
| Average Recorded Investment |
151
|
113
|
| Interest Income Recognized |
1
|
2
|
| Total |
|
|
| Average Recorded Investment |
3,417
|
3,109
|
| Interest Income Recognized |
36
|
79
|
| Consumer real estate | Home equity lines [Member] |
|
|
| With no related allowance recorded |
|
|
| Average Recorded Investment |
300
|
300
|
| Interest Income Recognized |
5
|
13
|
| Total |
|
|
| Average Recorded Investment |
300
|
300
|
| Interest Income Recognized |
5
|
13
|
| Consumer real estate | First deed of trust |
|
|
| With no related allowance recorded |
|
|
| Average Recorded Investment |
1,989
|
2,001
|
| Interest Income Recognized |
22
|
45
|
| With an allowance recorded |
|
|
| Average Recorded Investment |
151
|
113
|
| Interest Income Recognized |
1
|
2
|
| Total |
|
|
| Average Recorded Investment |
2,140
|
2,114
|
| Interest Income Recognized |
23
|
47
|
| Consumer real estate | Second Deed of Trust [Member] |
|
|
| With no related allowance recorded |
|
|
| Average Recorded Investment |
977
|
695
|
| Interest Income Recognized |
8
|
19
|
| Total |
|
|
| Average Recorded Investment |
977
|
695
|
| Interest Income Recognized |
8
|
19
|
| Commercial and industrial loans | Commercial and industrial loans (except those secured by real estate) |
|
|
| With no related allowance recorded |
|
|
| Average Recorded Investment |
202
|
173
|
| Interest Income Recognized |
1
|
1
|
| With an allowance recorded |
|
|
| Average Recorded Investment |
|
42
|
| Interest Income Recognized |
|
6
|
| Total |
|
|
| Average Recorded Investment |
202
|
215
|
| Interest Income Recognized |
$ 1
|
$ 7
|