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Loans, net and allowance for loan losses - Loans Modified Resulting in Troubled Debt Restructurings (Details) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2019 USD ($) | Sep. 30, 2020 USD ($) contract | Sep. 30, 2019 USD ($) contract | Dec. 31, 2019 USD ($)
Number of loans modified | contract |  | 4 | 1 |
Pre-Modification Outstanding Recorded Investment |  | $ 1,085,000 | $ 340,000 |
Post-Modification Outstanding Recorded Investment |  | 1,085,000 | 300,000 |
Loans receivable, related parties, considered as nonaccrual, past due or restructured or potential credit risk | $ 2,262,000 | $ 3,004,000 | $ 2,262,000 | $ 2,193,000
Real estate Commercial |  |  |  |
Number of loans modified | contract |  | 3 | 1 |
Pre-Modification Outstanding Recorded Investment |  | $ 1,073,000 | $ 340,000 |
Post-Modification Outstanding Recorded Investment |  | $ 1,073,000 | 300,000 |
Recorded Investment | 335,000 |  | 335,000 |
Number of defaults on loans restructured |  |  | $ 2 |
Loan repaid | 332,000 |  |  |
Real estate Residential |  |  |  |
Number of defaults on loans restructured | contract |  | 1 |  |
Recorded Investment |  | $ 52,000 |  |
Number of defaults on loans restructured | $ 0 |  |  |
Commercial and Industrial |  |  |  |
Number of loans modified | contract |  | 1 |  |
Pre-Modification Outstanding Recorded Investment |  | $ 12,000 |  |
Post-Modification Outstanding Recorded Investment |  | $ 12,000 |  |

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- Definition Loans made to related parties which are considered nonaccrual, past due, restructured or a potential credit risk. + References No definition available. + Details
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- Definition Represents the number of defaults on loans restructured. + 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, after troubled debt restructuring, of modified financing receivable. + 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 within previous 12 months, with subsequent payment default. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953682-111524 + Details
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