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Summary of Significant Accounting Policies (Narrative) (Details) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 USD ($) loan | Dec. 31, 2019 USD ($) item segment | Jan. 01, 2019 USD ($)
Significant Accounting Policies [Line Items] |  |  |
Property, plant and equipment, depreciation methods | Depreciation and amortization are calculated using the straight-line method over the estimated useful lives of the assets. |  |
Number of reporting units | item |  | 1 |
Number of operating segments | segment |  | 1 |
Tax at federal statutory rate | 21.00% | 21.00% |
Cash and cash equivalents in excess of FDIC insurance | $ 6,700 |  |
Advertising expense | 331 | $ 425 |
Right-of-use assets | 4,795 | 4,771 | $ 3,800
Operating lease liability | 4,874 | 4,792 | $ 3,800
Reclassification of (gains) recognized in net income | 347 | $ 0 |
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax | $ 88 |  |
Number Of Libor Based Loans | loan | 27 |  |
Percentage Of Libor Based Loans | 7.80% |  |
Asset Value Exceeding Amount | $ 1,000,000 |  |
Land Improvements |  |  |
Significant Accounting Policies [Line Items] |  |  |
Property, plant and equipment, useful life | 15 years |  |
Minimum | Furniture, Fixtures and Equipment |  |  |
Significant Accounting Policies [Line Items] |  |  |
Property, plant and equipment, useful life | 3 years |  |
Minimum | Computer Hardware and Data Handling Equipment |  |  |
Significant Accounting Policies [Line Items] |  |  |
Property, plant and equipment, useful life | 3 years |  |
Minimum | Building and Building Improvements |  |  |
Significant Accounting Policies [Line Items] |  |  |
Property, plant and equipment, useful life | 10 years |  |
Maximum | Furniture, Fixtures and Equipment |  |  |
Significant Accounting Policies [Line Items] |  |  |
Property, plant and equipment, useful life | 10 years |  |
Maximum | Computer Hardware and Data Handling Equipment |  |  |
Significant Accounting Policies [Line Items] |  |  |
Property, plant and equipment, useful life | 5 years |  |
Maximum | Building and Building Improvements |  |  |
Significant Accounting Policies [Line Items] |  |  |
Property, plant and equipment, useful life | 40 years |  |

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