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Loans and Allowance for Credit Losses on Loans - Defaults on Troubled Debt Restructurings (Details) | 12 Months Ended | 24 Months Ended
--- | --- | ---
Dec. 31, 2020 USD ($) | Dec. 31, 2020 USD ($) contract | Dec. 31, 2020 USD ($) loan | Dec. 31, 2019 USD ($) contract | Dec. 31, 2020 USD ($) item
Allowance for Credit Losses on Loans |  |  |  |  |
Number of loans modified as troubled debt restructurings during the period |  | 15 | 15 | 3 |
Recorded investment of troubled debt restructurings | $ | $ 674,000 | $ 674,000 | $ 674,000 | $ 1,039,000 | $ 674,000
Default period contractually past due under modified terms (in days) | 30 days |  |  |  |
Number of defaults on troubled debt restructurings | item |  |  |  |  | 0
Period of consecutive payments (in months) | 6 months |  |  |  |

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- Definition Represents the number of days past due under the modified terms in a troubled debt restructuring, when a loan is considered to be in default. + References No definition available. + Details
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- Definition Represents the period of time of consecutive payments made in accordance with modified terms for troubled debt restructurings to return to accruing status from nonaccruing status. + References No definition available. + Details
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- Definition Number of financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953676-111524 + Details
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- Definition Amount of financing receivable modified as troubled debt restructuring. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953676-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=121585226&loc=d3e18845-111554 + Details
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- Definition Number of financing receivable contracts modified as troubled debt restructuring within previous 12 months, with subsequent payment default. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953682-111524 + Details
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