Loans and allowance for loan losses - Nonaccrual TDRs and the related specific valuation allowance by portfolio segment (Details)
|
3 Months Ended |
9 Months Ended |
12 Months Ended |
|
Sep. 30, 2020
USD ($)
|
Sep. 30, 2019
USD ($)
|
Sep. 30, 2020
USD ($)
loan
|
Sep. 30, 2019
USD ($)
|
Dec. 31, 2019
USD ($)
loan
|
| Information concerning Troubled Debt Restructurings |
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|
|
|
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| Number of Loans |
0
|
0
|
|
|
|
| Specific Valuation Allowance [Member] |
|
|
|
|
|
| Information concerning Troubled Debt Restructurings |
|
|
|
|
|
| Recorded Investment |
$ 28,000
|
|
$ 28,000
|
|
$ 24,000
|
| Number of Loans | loan |
|
|
3
|
|
3
|
| Portfolio Segment [Member] |
|
|
|
|
|
| Information concerning Troubled Debt Restructurings |
|
|
|
|
|
| Recorded Investment |
7,862,000
|
|
$ 7,862,000
|
|
$ 8,410,000
|
| Number of Loans | loan |
|
|
37
|
|
38
|
| Performing Financing Receivable [Member] |
|
|
|
|
|
| Information concerning Troubled Debt Restructurings |
|
|
|
|
|
| Recorded Investment |
6,584,000
|
|
$ 6,584,000
|
|
$ 7,059,000
|
| Number of Loans | loan |
|
|
26
|
|
29
|
| Nonperforming Financial Instruments [Member] |
|
|
|
|
|
| Information concerning Troubled Debt Restructurings |
|
|
|
|
|
| Recorded Investment |
1,278,000
|
|
$ 1,278,000
|
|
$ 1,351,000
|
| Number of Loans | loan |
|
|
11
|
|
9
|
| Commercial real estate |
|
|
|
|
|
| Information concerning Troubled Debt Restructurings |
|
|
|
|
|
| Number of Loans |
|
|
1,000
|
1,000
|
|
| Commercial real estate | Specific Valuation Allowance [Member] |
|
|
|
|
|
| Information concerning Troubled Debt Restructurings |
|
|
|
|
|
| Recorded Investment |
4,000
|
|
$ 4,000
|
|
$ 15,000
|
| Commercial real estate | Portfolio Segment [Member] |
|
|
|
|
|
| Information concerning Troubled Debt Restructurings |
|
|
|
|
|
| Recorded Investment |
5,422,000
|
|
5,422,000
|
|
5,806,000
|
| Commercial real estate | Performing Financing Receivable [Member] |
|
|
|
|
|
| Information concerning Troubled Debt Restructurings |
|
|
|
|
|
| Recorded Investment |
5,115,000
|
|
5,115,000
|
|
5,309,000
|
| Commercial real estate | Nonperforming Financial Instruments [Member] |
|
|
|
|
|
| Information concerning Troubled Debt Restructurings |
|
|
|
|
|
| Recorded Investment |
307,000
|
|
307,000
|
|
497,000
|
| Consumer real estate | Specific Valuation Allowance [Member] |
|
|
|
|
|
| Information concerning Troubled Debt Restructurings |
|
|
|
|
|
| Recorded Investment |
8,000
|
|
8,000
|
|
9,000
|
| Consumer real estate | Portfolio Segment [Member] |
|
|
|
|
|
| Information concerning Troubled Debt Restructurings |
|
|
|
|
|
| Recorded Investment |
2,243,000
|
|
2,243,000
|
|
2,393,000
|
| Consumer real estate | Performing Financing Receivable [Member] |
|
|
|
|
|
| Information concerning Troubled Debt Restructurings |
|
|
|
|
|
| Recorded Investment |
1,469,000
|
|
1,469,000
|
|
1,570,000
|
| Consumer real estate | Nonperforming Financial Instruments [Member] |
|
|
|
|
|
| Information concerning Troubled Debt Restructurings |
|
|
|
|
|
| Recorded Investment |
774,000
|
|
$ 774,000
|
|
823,000
|
| Owner Occupied [Member] | Commercial real estate |
|
|
|
|
|
| Information concerning Troubled Debt Restructurings |
|
|
|
|
|
| Number of Loans |
|
|
1,000
|
|
|
| Owner Occupied [Member] | Commercial real estate | Specific Valuation Allowance [Member] |
|
|
|
|
|
| Information concerning Troubled Debt Restructurings |
|
|
|
|
|
| Recorded Investment |
4,000
|
|
$ 4,000
|
|
15,000
|
| Owner Occupied [Member] | Commercial real estate | Portfolio Segment [Member] |
|
|
|
|
|
| Information concerning Troubled Debt Restructurings |
|
|
|
|
|
| Recorded Investment |
3,731,000
|
|
3,731,000
|
|
3,502,000
|
| Owner Occupied [Member] | Commercial real estate | Performing Financing Receivable [Member] |
|
|
|
|
|
| Information concerning Troubled Debt Restructurings |
|
|
|
|
|
| Recorded Investment |
3,424,000
|
|
3,424,000
|
|
3,502,000
|
| Owner Occupied [Member] | Commercial real estate | Nonperforming Financial Instruments [Member] |
|
|
|
|
|
| Information concerning Troubled Debt Restructurings |
|
|
|
|
|
| Recorded Investment |
307,000
|
|
307,000
|
|
|
| Non-Owner Occupied [Member] | Commercial real estate |
|
|
|
|
|
| Information concerning Troubled Debt Restructurings |
|
|
|
|
|
| Number of Loans |
|
|
|
1,000
|
|
| Non-Owner Occupied [Member] | Commercial real estate | Portfolio Segment [Member] |
|
|
|
|
|
| Information concerning Troubled Debt Restructurings |
|
|
|
|
|
| Recorded Investment |
1,691,000
|
|
1,691,000
|
|
2,304,000
|
| Non-Owner Occupied [Member] | Commercial real estate | Performing Financing Receivable [Member] |
|
|
|
|
|
| Information concerning Troubled Debt Restructurings |
|
|
|
|
|
| Recorded Investment |
1,691,000
|
|
1,691,000
|
|
1,807,000
|
| Non-Owner Occupied [Member] | Commercial real estate | Nonperforming Financial Instruments [Member] |
|
|
|
|
|
| Information concerning Troubled Debt Restructurings |
|
|
|
|
|
| Recorded Investment |
|
|
|
|
497,000
|
| First Deed of Trust [Member] | Consumer real estate | Specific Valuation Allowance [Member] |
|
|
|
|
|
| Information concerning Troubled Debt Restructurings |
|
|
|
|
|
| Recorded Investment |
8,000
|
|
8,000
|
|
9,000
|
| First Deed of Trust [Member] | Consumer real estate | Portfolio Segment [Member] |
|
|
|
|
|
| Information concerning Troubled Debt Restructurings |
|
|
|
|
|
| Recorded Investment |
1,613,000
|
|
1,613,000
|
|
1,641,000
|
| First Deed of Trust [Member] | Consumer real estate | Performing Financing Receivable [Member] |
|
|
|
|
|
| Information concerning Troubled Debt Restructurings |
|
|
|
|
|
| Recorded Investment |
901,000
|
|
901,000
|
|
881,000
|
| First Deed of Trust [Member] | Consumer real estate | Nonperforming Financial Instruments [Member] |
|
|
|
|
|
| Information concerning Troubled Debt Restructurings |
|
|
|
|
|
| Recorded Investment |
712,000
|
|
712,000
|
|
760,000
|
| Second Deed of Trust [Member] | Consumer real estate | Portfolio Segment [Member] |
|
|
|
|
|
| Information concerning Troubled Debt Restructurings |
|
|
|
|
|
| Recorded Investment |
630,000
|
|
630,000
|
|
752,000
|
| Second Deed of Trust [Member] | Consumer real estate | Performing Financing Receivable [Member] |
|
|
|
|
|
| Information concerning Troubled Debt Restructurings |
|
|
|
|
|
| Recorded Investment |
568,000
|
|
568,000
|
|
689,000
|
| Second Deed of Trust [Member] | Consumer real estate | Nonperforming Financial Instruments [Member] |
|
|
|
|
|
| Information concerning Troubled Debt Restructurings |
|
|
|
|
|
| Recorded Investment |
62,000
|
|
62,000
|
|
63,000
|
| Commercial and industrial loans (except those secured by real estate) | Commercial and industrial loans | Specific Valuation Allowance [Member] |
|
|
|
|
|
| Information concerning Troubled Debt Restructurings |
|
|
|
|
|
| Recorded Investment |
16,000
|
|
16,000
|
|
|
| Commercial and industrial loans (except those secured by real estate) | Commercial and industrial loans | Portfolio Segment [Member] |
|
|
|
|
|
| Information concerning Troubled Debt Restructurings |
|
|
|
|
|
| Recorded Investment |
197,000
|
|
197,000
|
|
211,000
|
| Commercial and industrial loans (except those secured by real estate) | Commercial and industrial loans | Performing Financing Receivable [Member] |
|
|
|
|
|
| Information concerning Troubled Debt Restructurings |
|
|
|
|
|
| Recorded Investment |
|
|
|
|
180,000
|
| Commercial and industrial loans (except those secured by real estate) | Commercial and industrial loans | Nonperforming Financial Instruments [Member] |
|
|
|
|
|
| Information concerning Troubled Debt Restructurings |
|
|
|
|
|
| Recorded Investment |
$ 197,000
|
|
$ 197,000
|
|
$ 31,000
|