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Loans, Allowance for Credit Losses and Credit Quality Financing Receivable, Allowance for Credit Loss (Details) - USD ($) | 3 Months Ended | 9 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021 | Jun. 30, 2022 | Dec. 31, 2021 | Jun. 30, 2021 | Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss | $ 147,313,000 | [1] | $ 92,246,000 | [1] | $ 147,313,000 | [1] | $ 92,246,000 | [1] | $ 144,319,000 | $ 146,922,000 | $ 102,357,000 | $ 113,392,000
Allowance for Loan and Lease Losses, Write-offs | (741,000) |  |  |  |  |  |  |  |  |  |  |
Allowance for Loan and Lease Loss, Recovery of Bad Debts | 735,000 |  |  |  |  |  |  |  |  |  |  |
Provision for Loan and Lease Losses | 3,000,000 |  |  |  |  |  |  |  |  |  |  |
Provision for (release of) credit losses | 3,000,000 |  | (10,000,000) |  | 1,000,000 |  | (17,500,000) |  |  |  |  |
Allowance for Loan and Lease Loss, Recovery of Bad Debts |  |  | 221,000 |  | 1,383,000 |  | 853,000 |  |  |  |  |
Allowance for Loan and Lease Losses, Write-offs |  |  | (332,000) |  | (1,992,000) |  | (4,499,000) |  |  |  |  |
Commercial And Industrial [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss | 20,169,000 | [1] | 16,014,000 | [1] | 20,169,000 | [1] | 16,014,000 | [1] | 14,107,000 | 14,402,000 | 17,032,000 | 21,086,000
Allowance for Loan and Lease Losses, Write-offs | 0 |  |  |  |  |  |  |  |  |  |  |
Allowance for Loan and Lease Loss, Recovery of Bad Debts | 2,000 |  |  |  |  |  |  |  |  |  |  |
Provision for Loan and Lease Losses | 6,060,000 |  |  |  |  |  |  |  |  |  |  |
Provision for (release of) credit losses |  |  | (1,018,000) |  | 5,723,000 |  | (1,698,000) |  |  |  |  |
Allowance for Loan and Lease Loss, Recovery of Bad Debts |  |  | 1,000 |  | 44,000 |  | 100,000 |  |  |  |  |
Allowance for Loan and Lease Losses, Write-offs |  |  | (1,000) |  | 0 |  | (3,474,000) |  |  |  |  |
Commercial Real Estate [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss | 80,036,000 | [1] | 37,798,000 | [1] | 80,036,000 | [1] | 37,798,000 | [1] | 83,456,000 | 83,486,000 | 44,325,000 | 45,009,000
Allowance for Loan and Lease Losses, Write-offs | (62,000) |  |  |  |  |  |  |  |  |  |  |
Allowance for Loan and Lease Loss, Recovery of Bad Debts | 330,000 |  |  |  |  |  |  |  |  |  |  |
Provision for Loan and Lease Losses | (3,688,000) |  |  |  |  |  |  |  |  |  |  |
Provision for (release of) credit losses |  |  | (6,527,000) |  | (3,721,000) |  | (7,268,000) |  |  |  |  |
Allowance for Loan and Lease Loss, Recovery of Bad Debts |  |  | 0 |  | 333,000 |  | 57,000 |  |  |  |  |
Allowance for Loan and Lease Losses, Write-offs |  |  | 0 |  | (62,000) |  | 0 |  |  |  |  |
Construction Loans [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss | 11,419,000 | [1] | 4,468,000 | [1] | 11,419,000 | [1] | 4,468,000 | [1] | 11,710,000 | 12,316,000 | 4,865,000 | 5,397,000
Allowance for Loan and Lease Losses, Write-offs | 0 |  |  |  |  |  |  |  |  |  |  |
Allowance for Loan and Lease Loss, Recovery of Bad Debts | 0 |  |  |  |  |  |  |  |  |  |  |
Provision for Loan and Lease Losses | (291,000) |  |  |  |  |  |  |  |  |  |  |
Provision for (release of) credit losses |  |  | (397,000) |  | (897,000) |  | (929,000) |  |  |  |  |
Allowance for Loan and Lease Loss, Recovery of Bad Debts |  |  | 0 |  | 0 |  | 0 |  |  |  |  |
Allowance for Loan and Lease Losses, Write-offs |  |  | 0 |  | 0 |  | 0 |  |  |  |  |
Small Business [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss | 2,624,000 | [1] | 3,667,000 | [1] | 2,624,000 | [1] | 3,667,000 | [1] | 2,784,000 | 3,508,000 | 3,612,000 | 5,095,000
Allowance for Loan and Lease Losses, Write-offs | 0 |  |  |  |  |  |  |  |  |  |  |
Allowance for Loan and Lease Loss, Recovery of Bad Debts | 88,000 |  |  |  |  |  |  |  |  |  |  |
Provision for Loan and Lease Losses | (248,000) |  |  |  |  |  |  |  |  |  |  |
Provision for (release of) credit losses |  |  | 88,000 |  | (972,000) |  | (1,309,000) |  |  |  |  |
Allowance for Loan and Lease Loss, Recovery of Bad Debts |  |  | 50,000 |  | 147,000 |  | 65,000 |  |  |  |  |
Allowance for Loan and Lease Losses, Write-offs |  |  | (83,000) |  | (59,000) |  | (184,000) |  |  |  |  |
Residential Real Estate [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss | 20,602,000 | [1] | 11,047,000 | [1] | 20,602,000 | [1] | 11,047,000 | [1] | 19,750,000 | 14,484,000 | 12,014,000 | 14,275,000
Allowance for Loan and Lease Losses, Write-offs | 0 |  |  |  |  |  |  |  |  |  |  |
Allowance for Loan and Lease Loss, Recovery of Bad Debts | 0 |  |  |  |  |  |  |  |  |  |  |
Provision for Loan and Lease Losses | 852,000 |  |  |  |  |  |  |  |  |  |  |
Provision for (release of) credit losses |  |  | (967,000) |  | 6,118,000 |  | (3,229,000) |  |  |  |  |
Allowance for Loan and Lease Loss, Recovery of Bad Debts |  |  | 0 |  | 0 |  | 1,000 |  |  |  |  |
Allowance for Loan and Lease Losses, Write-offs |  |  | 0 |  | 0 |  | 0 |  |  |  |  |
Home Equity Loan [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss | 11,651,000 | [1] | 18,868,000 | [1] | 11,651,000 | [1] | 18,868,000 | [1] | 11,740,000 | 17,986,000 | 20,087,000 | 22,060,000
Allowance for Loan and Lease Losses, Write-offs | 0 |  |  |  |  |  |  |  |  |  |  |
Allowance for Loan and Lease Loss, Recovery of Bad Debts | 65,000 |  |  |  |  |  |  |  |  |  |  |
Provision for Loan and Lease Losses | (154,000) |  |  |  |  |  |  |  |  |  |  |
Provision for (release of) credit losses |  |  | (1,268,000) |  | (6,318,000) |  | (3,230,000) |  |  |  |  |
Allowance for Loan and Lease Loss, Recovery of Bad Debts |  |  | 49,000 |  | 105,000 |  | 107,000 |  |  |  |  |
Allowance for Loan and Lease Losses, Write-offs |  |  | 0 |  | (122,000) |  | (69,000) |  |  |  |  |
Consumer - Other [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss | 812,000 | [1] | 384,000 | [1] | 812,000 | [1] | 384,000 | [1] | $ 772,000 | $ 740,000 | $ 422,000 | $ 470,000
Allowance for Loan and Lease Losses, Write-offs | (679,000) |  |  |  |  |  |  |  |  |  |  |
Allowance for Loan and Lease Loss, Recovery of Bad Debts | 251,000 |  |  |  |  |  |  |  |  |  |  |
Provision for Loan and Lease Losses | $ 469,000 |  |  |  |  |  |  |  |  |  |  |
Provision for (release of) credit losses |  |  | 89,000 |  | 1,067,000 |  | 163,000 |  |  |  |  |
Allowance for Loan and Lease Loss, Recovery of Bad Debts |  |  | 121,000 |  | 754,000 |  | 523,000 |  |  |  |  |
Allowance for Loan and Lease Losses, Write-offs |  |  | $ (248,000) |  | $ (1,749,000) |  | $ (772,000) |  |  |  |  |
[1] | Balances of accrued interest receivable excluded from amortized cost and the calculation of allowance for credit losses amounted to $42.7 million and $36.7 million as of September 30, 2022 and September 30, 2021, respectively.

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- Definition Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(4) -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 + Details
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