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Loans - Amortized Cost Basis of Collateral Dependent Loans (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020 | Sep. 30, 2020
--- | --- | --- | ---
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Total Loans | $ 2,627,795 | $ 2,565,798 | $ 2,564,009
Real Estate |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Total Loans | 7,930 |  |
Real Estate | Commercial |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Total Loans | 0 |  |
Real Estate | Commercial Real Estate |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Total Loans | 7,254 |  |
Real Estate | Consumer |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Total Loans | 0 |  |
Real Estate | Residential |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Total Loans | 676 |  |
Residential Real Estate |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Total Loans | 676 |  |
Residential Real Estate | Commercial |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Total Loans | 0 |  |
Residential Real Estate | Commercial Real Estate |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Total Loans | 0 |  |
Residential Real Estate | Consumer |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Total Loans | 0 |  |
Residential Real Estate | Residential |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Total Loans | 676 |  |
Commercial Real Estate |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Total Loans | 7,254 |  |
Commercial Real Estate | Commercial |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Total Loans | 0 |  |
Commercial Real Estate | Commercial Real Estate |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Total Loans | 7,254 |  |
Commercial Real Estate | Consumer |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Total Loans | 0 |  |
Commercial Real Estate | Residential |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Total Loans | $ 0 |  |

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- Definition Amount excluding accrued interest, after allowance for credit loss, of financing receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446 + Details
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