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Loans - Modification Statuses by Portfolio Segment (Details) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 USD ($) loan | Dec. 31, 2019 USD ($) loan | Dec. 31, 2018 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Units | loan | 74 | 81 |
Balance | $ 1,476,761 | $ 1,297,075 | $ 1,238,283
Out of Modification | Exemption from Troubled Debt Restructure Designation, CARES Act |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Balance | $ 213,819 |  |
Commercial/Municipal Portfolio Segment | Exemption from Troubled Debt Restructure Designation, CARES Act |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Units | loan | 601 |  |
Percentage of loans receivable, by type | 1.000 |  |
Balance | $ 238,408 |  |
Percentage of balance | 100.00% |  |
Commercial/Municipal Portfolio Segment | Paid Off | Exemption from Troubled Debt Restructure Designation, CARES Act |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Units | loan | 61 |  |
Percentage of loans receivable, by type | 0.100 |  |
Balance | $ 9,027 |  |
Percentage of balance | 4.00% |  |
Commercial/Municipal Portfolio Segment | Subsequent Modification | Exemption from Troubled Debt Restructure Designation, CARES Act |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Units | loan | 54 |  |
Percentage of loans receivable, by type | 0.090 |  |
Balance | $ 32,724 |  |
Percentage of balance | 14.00% |  |
Commercial/Municipal Portfolio Segment | Still in Original Modification | Exemption from Troubled Debt Restructure Designation, CARES Act |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Units | loan | 16 |  |
Percentage of loans receivable, by type | 0.030 |  |
Balance | $ 7,244 |  |
Percentage of balance | 3.00% |  |
Commercial/Municipal Portfolio Segment | Out of Modification | Exemption from Troubled Debt Restructure Designation, CARES Act |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Units | loan | 470 |  |
Percentage of loans receivable, by type | 0.780 |  |
Balance | $ 189,413 |  |
Percentage of balance | 79.00% |  |
Residential | Exemption from Troubled Debt Restructure Designation, CARES Act |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Units | loan | 362 |  |
Percentage of loans receivable, by type | 1.000 |  |
Balance | $ 51,566 |  |
Percentage of balance | 100.00% |  |
Residential | Paid Off | Exemption from Troubled Debt Restructure Designation, CARES Act |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Units | loan | 27 |  |
Percentage of loans receivable, by type | 0.070 |  |
Balance | $ 5,930 |  |
Percentage of balance | 12.00% |  |
Residential | Subsequent Modification | Exemption from Troubled Debt Restructure Designation, CARES Act |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Units | loan | 154 |  |
Percentage of loans receivable, by type | 0.430 |  |
Balance | $ 19,468 |  |
Percentage of balance | 38.00% |  |
Residential | Still in Original Modification | Exemption from Troubled Debt Restructure Designation, CARES Act |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Units | loan | 27 |  |
Percentage of loans receivable, by type | 0.070 |  |
Balance | $ 2,615 |  |
Percentage of balance | 5.00% |  |
Residential | Out of Modification | Exemption from Troubled Debt Restructure Designation, CARES Act |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Units | loan | 154 |  |
Percentage of loans receivable, by type | 0.430 |  |
Balance | $ 23,553 |  |
Percentage of balance | 45.00% |  |
Consumer |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Units | loan | 1 | 0 |
Balance | $ 25,857 | $ 26,503 | $ 24,860
Consumer | Exemption from Troubled Debt Restructure Designation, CARES Act |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Units | loan | 68 |  |
Percentage of loans receivable, by type | 1.000 |  |
Balance | $ 1,129 |  |
Percentage of balance | 100.00% |  |
Consumer | Paid Off | Exemption from Troubled Debt Restructure Designation, CARES Act |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Units | loan | 11 |  |
Percentage of loans receivable, by type | 0.160 |  |
Balance | $ 118 |  |
Percentage of balance | 10.00% |  |
Consumer | Subsequent Modification | Exemption from Troubled Debt Restructure Designation, CARES Act |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Units | loan | 3 |  |
Percentage of loans receivable, by type | 0.040 |  |
Balance | $ 104 |  |
Percentage of balance | 9.00% |  |
Consumer | Still in Original Modification | Exemption from Troubled Debt Restructure Designation, CARES Act |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Units | loan | 4 |  |
Percentage of loans receivable, by type | 0.060 |  |
Balance | $ 53 |  |
Percentage of balance | 5.00% |  |
Consumer | Out of Modification | Exemption from Troubled Debt Restructure Designation, CARES Act |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Units | loan | 50 |  |
Percentage of loans receivable, by type | 0.740 |  |
Balance | $ 854 |  |
Percentage of balance | 76.00% |  |

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