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Loans and Loans Held for Sale - Summary of Restructured Loans (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Dec. 31, 2021
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Restructured loans | $ 427 | $ 1,377 | $ 1,930 | $ 8,159 |
Commercial real estate | Commercial Loans |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Restructured loans | 0 | 0 | 0 | 0 |
Commercial and industrial | Commercial Loans |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Restructured loans | 0 | 0 | 0 | 6,229 |
Commercial construction | Commercial Loans |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Restructured loans | 0 | 0 | 0 | 0 |
Business banking | Commercial Loans |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Restructured loans | 0 | 1,130 | 0 | 1,210 |
Consumer real estate | Consumer Loans |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Restructured loans | 425 | 247 | 1,927 | 720 |
Other Consumer | Consumer Loans |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Restructured loans | $ 2 | $ 0 | 3 | $ 0 |
Total TDRs |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Restructured loans |  |  | 13,348 |  | $ 31,695
Total TDRs | Commercial real estate | Commercial Loans |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Restructured loans |  |  | 16 |  | 1,697
Total TDRs | Commercial and industrial | Commercial Loans |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Restructured loans |  |  | 690 |  | 15,637
Total TDRs | Commercial construction | Commercial Loans |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Restructured loans |  |  | 2,174 |  | 4,277
Total TDRs | Business banking | Commercial Loans |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Restructured loans |  |  | 2,005 |  | 2,554
Total TDRs | Consumer real estate | Consumer Loans |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Restructured loans |  |  | 8,458 |  | 7,527
Total TDRs | Other Consumer | Consumer Loans |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Restructured loans |  |  | 5 |  | 3
Accruing TDRs |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Restructured loans |  |  | 9,338 |  | 9,921
Accruing TDRs | Commercial real estate | Commercial Loans |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Restructured loans |  |  | 0 |  | 0
Accruing TDRs | Commercial and industrial | Commercial Loans |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Restructured loans |  |  | 690 |  | 748
Accruing TDRs | Commercial construction | Commercial Loans |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Restructured loans |  |  | 1,694 |  | 2,190
Accruing TDRs | Business banking | Commercial Loans |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Restructured loans |  |  | 680 |  | 858
Accruing TDRs | Consumer real estate | Consumer Loans |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Restructured loans |  |  | 6,269 |  | 6,122
Accruing TDRs | Other Consumer | Consumer Loans |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Restructured loans |  |  | 5 |  | 3
Nonaccruing TDRs |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Restructured loans |  |  | 4,010 |  | 21,774
Nonaccruing TDRs | Commercial real estate | Commercial Loans |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Restructured loans |  |  | 16 |  | 1,697
Nonaccruing TDRs | Commercial and industrial | Commercial Loans |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Restructured loans |  |  | 0 |  | 14,889
Nonaccruing TDRs | Commercial construction | Commercial Loans |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Restructured loans |  |  | 480 |  | 2,087
Nonaccruing TDRs | Business banking | Commercial Loans |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Restructured loans |  |  | 1,325 |  | 1,696
Nonaccruing TDRs | Consumer real estate | Consumer Loans |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Restructured loans |  |  | 2,189 |  | 1,405
Nonaccruing TDRs | Other Consumer | Consumer Loans |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |  |
Restructured loans |  |  | $ 0 |  | $ 0

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