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Fair Value of Financial Instruments, Assets and Liabilities Measured on Nonrecurring Basis (Details) - Nonrecurring [Member] - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Fair Value, Asset and Liabilities [Abstract] |  |
Assets, fair value | $ 0 |
Liabilities, fair value | $ 0 |
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Impaired Loans [Member] | Commercial Real Estate [Member] | Nonowner Occupied [Member] |  |
Fair Value, Asset and Liabilities [Abstract] |  |
Assets, fair value |  | $ 0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Impaired Loans [Member] | Commercial and Industrial [Member] |  |
Fair Value, Asset and Liabilities [Abstract] |  |
Assets, fair value |  | 0
Significant Other Observable Inputs (Level 2) [Member] | Impaired Loans [Member] | Commercial Real Estate [Member] | Nonowner Occupied [Member] |  |
Fair Value, Asset and Liabilities [Abstract] |  |
Assets, fair value |  | 0
Significant Other Observable Inputs (Level 2) [Member] | Impaired Loans [Member] | Commercial and Industrial [Member] |  |
Fair Value, Asset and Liabilities [Abstract] |  |
Assets, fair value |  | 0
Significant Unobservable Inputs (Level 3) [Member] | Impaired Loans [Member] | Commercial Real Estate [Member] | Nonowner Occupied [Member] |  |
Fair Value, Asset and Liabilities [Abstract] |  |
Assets, fair value |  | 1,644
Significant Unobservable Inputs (Level 3) [Member] | Impaired Loans [Member] | Commercial and Industrial [Member] |  |
Fair Value, Asset and Liabilities [Abstract] |  |
Assets, fair value |  | $ 4,559

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