Loans and allowance for loan losses - Information on nonaccrual loans (Details) - USD ($)
$ in Thousands |
Sep. 30, 2020 |
Dec. 31, 2019 |
| Financing Receivable, Allowance for Credit Losses [Line Items] |
|
|
| Financing Receivable, Recorded Investment, Nonaccrual Status |
$ 2,226
|
$ 1,868
|
| Commercial real estate |
|
|
| Financing Receivable, Allowance for Credit Losses [Line Items] |
|
|
| Financing Receivable, Recorded Investment, Nonaccrual Status |
307
|
497
|
| Commercial real estate | Owner Occupied [Member] |
|
|
| Financing Receivable, Allowance for Credit Losses [Line Items] |
|
|
| Financing Receivable, Recorded Investment, Nonaccrual Status |
307
|
497
|
| Consumer real estate |
|
|
| Financing Receivable, Allowance for Credit Losses [Line Items] |
|
|
| Financing Receivable, Recorded Investment, Nonaccrual Status |
1,722
|
1,205
|
| Consumer real estate | Home equity lines [Member] |
|
|
| Financing Receivable, Allowance for Credit Losses [Line Items] |
|
|
| Financing Receivable, Recorded Investment, Nonaccrual Status |
300
|
300
|
| Consumer real estate | First Deed of Trust [Member] |
|
|
| Financing Receivable, Allowance for Credit Losses [Line Items] |
|
|
| Financing Receivable, Recorded Investment, Nonaccrual Status |
949
|
842
|
| Consumer real estate | Second Deed of Trust [Member] |
|
|
| Financing Receivable, Allowance for Credit Losses [Line Items] |
|
|
| Financing Receivable, Recorded Investment, Nonaccrual Status |
473
|
63
|
| Commercial and industrial loans | Commercial and industrial loans (except those secured by real estate) |
|
|
| Financing Receivable, Allowance for Credit Losses [Line Items] |
|
|
| Financing Receivable, Recorded Investment, Nonaccrual Status |
$ 197
|
$ 166
|