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Allowance for Credit Losses - Amortized Cost Basis of Loans and Leases on Nonaccrual Status (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020 | Dec. 31, 2020
Financing Receivable, Nonaccrual [Line Items] |  |  |  |  |
Nonaccrual Loans and Leases With No Allowance for Credit Losses | $ 2,596 |  | $ 2,596 |  | $ 3,156
Nonaccrual Loans and Leases | 8,628 |  | 8,628 |  | 9,082
Interest income recognized on nonaccrual loans and leases | 200 | $ 100 | 400 | $ 200 |
Accrued interest receivables written off, Interest income reversed | 200 | $ 200 | 700 | $ 1,100 |
Commercial and Industrial |  |  |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |  |  |
Nonaccrual Loans and Leases | 746 |  | 746 |  | 518
Commercial real estate |  |  |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |  |  |
Nonaccrual Loans and Leases With No Allowance for Credit Losses | 745 |  | 745 |  |
Nonaccrual Loans and Leases | 745 |  | 745 |  | 80
Construction |  |  |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |  |  |
Nonaccrual Loans and Leases With No Allowance for Credit Losses |  |  |  |  | 1,840
Nonaccrual Loans and Leases |  |  |  |  | 2,043
Residential |  |  |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |  |  |
Nonaccrual Loans and Leases With No Allowance for Credit Losses | 1,851 |  | 1,851 |  | 1,316
Nonaccrual Loans and Leases | $ 7,137 |  | $ 7,137 |  | $ 6,441

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- Definition Amount of financing receivable on nonaccrual status with no allowance for credit loss. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 16 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919258-210447 + Details
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- Definition Amount of financing receivable on nonaccrual status. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121611835&loc=d3e5111-111524 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 16 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919258-210447 + Details
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- Definition The amount of interest income on impaired and nonperforming loans that is due to the change in present value attributable to the passage of time. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=121611835&loc=d3e5278-111524 + Details
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