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Loans - Summary of Average Recorded Investment (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2020 | Mar. 31, 2019
Average recorded investment [Abstract] |  |
Average recorded investment in impaired loans | $ 7,447 | $ 5,976
1-4 Family First Lien Residential Mortgages [Member] |  |
Average recorded investment [Abstract] |  |
Average recorded investment in impaired loans | 1,608 | 1,625
Commercial Real Estate [Member] |  |
Average recorded investment [Abstract] |  |
Average recorded investment in impaired loans | 4,437 | 2,868
Commercial Lines of Credit [Member] |  |
Average recorded investment [Abstract] |  |
Average recorded investment in impaired loans | 183 | 287
Other Commercial and Industrial [Member] |  |
Average recorded investment [Abstract] |  |
Average recorded investment in impaired loans | 908 | 938
Home Equity and Junior Liens [Member] |  |
Average recorded investment [Abstract] |  |
Average recorded investment in impaired loans | 220 | 207
Other Consumer [Member] |  |
Average recorded investment [Abstract] |  |
Average recorded investment in impaired loans | $ 91 | $ 51

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