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Loans and Loans Held for Sale - Summary of Restructured Loans (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2022 | Mar. 31, 2021 | Dec. 31, 2021
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Restructured loans | $ 1,878 | $ 6,865 |
Commercial real estate | Commercial |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Restructured loans | 0 | 0 |
Commercial and industrial | Commercial |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Restructured loans | 0 | 6,296 |
Commercial construction | Commercial |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Restructured loans | 0 | 0 |
Business banking | Commercial |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Restructured loans | 0 | 0 |
Consumer real estate | Consumer |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Restructured loans | 1,878 | 568 |
Other consumer | Consumer |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Restructured loans | 0 | $ 1 |
Total TDRs |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Restructured loans | 26,128 |  | $ 31,695
Total TDRs | Commercial real estate | Commercial |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Restructured loans | 969 |  | 1,697
Total TDRs | Commercial and industrial | Commercial |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Restructured loans | 10,946 |  | 15,637
Total TDRs | Commercial construction | Commercial |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Restructured loans | 2,647 |  | 4,277
Total TDRs | Business banking | Commercial |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Restructured loans | 2,573 |  | 2,554
Total TDRs | Consumer real estate | Consumer |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Restructured loans | 8,990 |  | 7,527
Total TDRs | Other consumer | Consumer |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Restructured loans | 3 |  | 3
Performing TDRs |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Restructured loans | 10,739 |  | 9,921
Performing TDRs | Commercial real estate | Commercial |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Restructured loans | 0 |  | 0
Performing TDRs | Commercial and industrial | Commercial |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Restructured loans | 721 |  | 748
Performing TDRs | Commercial construction | Commercial |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Restructured loans | 2,167 |  | 2,190
Performing TDRs | Business banking | Commercial |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Restructured loans | 987 |  | 858
Performing TDRs | Consumer real estate | Consumer |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Restructured loans | 6,861 |  | 6,122
Performing TDRs | Other consumer | Consumer |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Restructured loans | 3 |  | 3
Nonperforming TDRs |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Restructured loans | 15,389 |  | 21,774
Nonperforming TDRs | Commercial real estate | Commercial |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Restructured loans | 969 |  | 1,697
Nonperforming TDRs | Commercial and industrial | Commercial |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Restructured loans | 10,225 |  | 14,889
Nonperforming TDRs | Commercial construction | Commercial |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Restructured loans | 480 |  | 2,087
Nonperforming TDRs | Business banking | Commercial |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Restructured loans | 1,586 |  | 1,696
Nonperforming TDRs | Consumer real estate | Consumer |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Restructured loans | 2,129 |  | 1,405
Nonperforming TDRs | Other consumer | Consumer |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Restructured loans | $ 0 |  | $ 0

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