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Loans and Allowance for Credit Losses on Loans - Troubled Debt Restructuring Narrative (Details) $ in Thousands | 9 Months Ended
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Sep. 30, 2021 USD ($) loan borrowingRelationship | Sep. 30, 2020 loan
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Number of loans removed from TDR designation | loan |  | 0
Unfunded commitments for TDR loans | $ 242 |
Financing receivable, loan modifications under CARES Act, payment relief, number of borrowing relationships | borrowingRelationship | 2 |
Financing receivable, loan modifications under CARES Act, payment relief | loan | 5 |
Financing receivable, modified under CARES Act, payment relief | $ 23,600 |
Financing receivable, weighted average loan-to-value ratio, modified under CARES Act, remaining payment relief | 33.00% |
Commercial loans | Commercial and industrial |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Number of loans removed from TDR designation | loan | 1 |
Loans removed from TDR designation, amortized cost | $ 2 |
Unfunded commitments for TDR loans | $ 600 |

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- Definition Financing Receivable, Modifications, Removal From Troubled Debt Restructuring, Number Of Contracts + References No definition available. + Details
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- Definition Amount of unfunded portion of contractual agreement to lend funds to borrower for financing receivable modified as troubled debt restructuring. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121585226&loc=d3e18794-111554 + Details
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