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Loans and Allowance for Loan Losses, Allowance for Loans Losses and Recorded Investment in Loans by Portfolio Segment Based on Impairment Method (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | --- | --- | ---
Ending allowance balance attributable to loans [Abstract] |  |  |  |
Individually evaluated for impairment | $ 0 | $ 807 |  |
Collectively evaluated for impairment | 7,160 | 5,465 |  |
Total ending allowance balance | 7,160 | 6,272 | $ 6,728 | $ 7,499
Loans [Abstract] |  |  |  |
Loans individually evaluated for impairment | 11,026 | 17,135 |  |
Loans collectively evaluated for impairment | 837,638 | 755,639 |  |
Total ending loans balance | 848,664 | 772,774 |  |
Residential Real Estate [Member] |  |  |  |
Ending allowance balance attributable to loans [Abstract] |  |  |  |
Individually evaluated for impairment | 0 | 0 |  |
Collectively evaluated for impairment | 1,480 | 1,250 |  |
Total ending allowance balance | 1,480 | 1,250 | 1,583 | 1,470
Loans [Abstract] |  |  |  |
Loans individually evaluated for impairment | 411 | 438 |  |
Loans collectively evaluated for impairment | 305,067 | 309,815 |  |
Total ending loans balance | 305,478 | 310,253 |  |
Commercial Real Estate [Member] |  |  |  |
Ending allowance balance attributable to loans [Abstract] |  |  |  |
Individually evaluated for impairment | 0 | 385 |  |
Collectively evaluated for impairment | 2,431 | 1,543 |  |
Total ending allowance balance | 2,431 | 1,928 | 2,186 | 2,978
Loans [Abstract] |  |  |  |
Loans individually evaluated for impairment | 5,845 | 11,300 |  |
Loans collectively evaluated for impairment | 247,604 | 210,836 |  |
Total ending loans balance | 253,449 | 222,136 |  |
Commercial and Industrial [Member] |  |  |  |
Ending allowance balance attributable to loans [Abstract] |  |  |  |
Individually evaluated for impairment | 0 | 303 |  |
Collectively evaluated for impairment | 1,776 | 1,144 |  |
Total ending allowance balance | 1,776 | 1,447 | 1,063 | 1,024
Loans [Abstract] |  |  |  |
Loans individually evaluated for impairment | 4,686 | 4,910 |  |
Loans collectively evaluated for impairment | 153,006 | 95,113 |  |
Total ending loans balance | 157,692 | 100,023 |  |
Consumer [Member] |  |  |  |
Ending allowance balance attributable to loans [Abstract] |  |  |  |
Individually evaluated for impairment | 0 | 119 |  |
Collectively evaluated for impairment | 1,473 | 1,528 |  |
Total ending allowance balance | 1,473 | 1,647 | $ 1,896 | $ 2,027
Loans [Abstract] |  |  |  |
Loans individually evaluated for impairment | 84 | 487 |  |
Loans collectively evaluated for impairment | 131,961 | 139,875 |  |
Total ending loans balance | $ 132,045 | $ 140,362 |  |

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