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Loans - TDRs by Class and Specific Reserve (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 USD ($) loan | Dec. 31, 2019 USD ($) loan
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Number of Loans | loan | 74 | 81
Balance | $ 11,534 | $ 21,424
Specific Reserves | $ 369 | $ 1,677
Commercial | Real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Number of Loans | loan | 13 | 17
Balance | $ 2,558 | $ 4,836
Specific Reserves | $ 106 | $ 246
Commercial | Construction |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Number of Loans | loan | 1 | 1
Balance | $ 681 | $ 701
Specific Reserves | $ 18 | $ 0
Commercial | Other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Number of Loans | loan | 6 | 8
Balance | $ 717 | $ 6,932
Specific Reserves | $ 96 | $ 1,231
Municipal |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Number of Loans | loan | 0 | 0
Balance | $ 0 | $ 0
Specific Reserves | $ 0 | $ 0
Residential | Construction |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Number of Loans | loan | 0 | 0
Balance | $ 0 | $ 0
Specific Reserves | $ 0 | $ 0
Residential | Term |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Number of Loans | loan | 51 | 52
Balance | $ 7,384 | $ 8,472
Specific Reserves | $ 149 | $ 200
Home equity line of credit |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Number of Loans | loan | 2 | 3
Balance | $ 186 | $ 483
Specific Reserves | $ 0 | $ 0
Consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Number of Loans | loan | 1 | 0
Balance | $ 8 | $ 0
Specific Reserves | $ 0 | $ 0

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