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Loans, Allowance for Credit Losses and Credit Quality Finance Receivable, Nonaccrual (Details) - USD ($) $ in Thousands | Jun. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Financing Receivable, Nonaccrual [Line Items] |  |  |
Finance Receivable, Nonaccrual, with allowance |  | $ 22,583 |
Financing Receivable, Nonaccrual, No Allowance |  | 26,173 |
Tdrs Recorded Investment On Nonaccrual Status |  | 24,098 | $ 24,766
Financing Receivable, Nonaccrual | [1] | 48,756 | 45,892
Commercial And Industrial [Member] |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |
Finance Receivable, Nonaccrual, with allowance |  | 1,045 |
Financing Receivable, Nonaccrual, No Allowance |  | 19,691 |
Financing Receivable, Nonaccrual |  | 20,736 | 22,574
Commercial Real Estate [Member] |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |
Finance Receivable, Nonaccrual, with allowance |  | 2,169 |
Financing Receivable, Nonaccrual, No Allowance |  | 4,144 |
Financing Receivable, Nonaccrual |  | 6,313 | 3,016
Construction Loans [Member] |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |
Finance Receivable, Nonaccrual, with allowance |  | 0 |
Financing Receivable, Nonaccrual |  | 0 | 0
Small Business [Member] |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |
Finance Receivable, Nonaccrual, with allowance |  | 619 |
Financing Receivable, Nonaccrual |  | 619 | 311
Residential Real Estate [Member] |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |
Finance Receivable, Nonaccrual, with allowance |  | 12,331 |
Financing Receivable, Nonaccrual, No Allowance |  | 2,230 |
Financing Receivable, Nonaccrual |  | 14,561 | 13,360
Home Equity Line of Credit [Member] |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |
Finance Receivable, Nonaccrual, with allowance |  | 6,329 |
Financing Receivable, Nonaccrual, No Allowance |  | 108 |
Financing Receivable, Nonaccrual |  | 6,437 | 6,570
Consumer - Other [Member] |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |
Finance Receivable, Nonaccrual, with allowance |  | 90 |
Financing Receivable, Nonaccrual |  | $ 90 | $ 61
[1] | (1)Included in these amounts were $24.1 million and $24.8 million of nonaccruing TDRs at June 30, 2020 and December 31, 2019, respectively.

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