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Loans Impaired Loans (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Recorded Investment [Abstract] |  |  |
With No Related Allowance | $ 2,929 | $ 2,144 |
With a Related Allowance | 294 | 1,543 |
Unpaid Principal Balance [Abstract] |  |  |
With No Related Allowance | 2,928 | 2,185 |
With a Related Allowance | 293 | 1,498 |
Average Recorded Balance [Abstract] |  |  |
With No Related Allowance | 2,537 | 2,113 | $ 2,684
With a Related Allowance | 920 | 773 | 0
Interest Income Recognized [Abstract] |  |  |
With No Related Allowance | 19 | 57 | 36
With a Related Allowance | 0 | 26 | 0
Cash Basis Income [Abstract] |  |  |
With No Related Allowance | 0 | 0 | 0
With a Related Allowance | 0 | 0 | 0
Commercial |  |  |
Recorded Investment [Abstract] |  |  |
With No Related Allowance | 430 | 0 |
With a Related Allowance | 0 | 485 |
Unpaid Principal Balance [Abstract] |  |  |
With No Related Allowance | 429 | 0 |
With a Related Allowance | 0 | 489 |
Average Recorded Balance [Abstract] |  |  |
With No Related Allowance | 215 | 0 | 78
With a Related Allowance | 243 | 243 | 0
Interest Income Recognized [Abstract] |  |  |
With No Related Allowance | 0 | 0 | 0
With a Related Allowance | 0 | 1 | 0
Cash Basis Income [Abstract] |  |  |
With No Related Allowance | 0 | 0 | 0
With a Related Allowance | 0 | 0 | 0
Commercial Real Estate |  |  |
Recorded Investment [Abstract] |  |  |
With No Related Allowance | 793 | 781 |
With a Related Allowance | 0 | 725 |
Unpaid Principal Balance [Abstract] |  |  |
With No Related Allowance | 793 | 816 |
With a Related Allowance | 0 | 721 |
Average Recorded Balance [Abstract] |  |  |
With No Related Allowance | 787 | 836 | 1,631
With a Related Allowance | 363 | 363 | 0
Interest Income Recognized [Abstract] |  |  |
With No Related Allowance | 0 | 34 | 29
With a Related Allowance | 0 | 2 | 0
Cash Basis Income [Abstract] |  |  |
With No Related Allowance | 0 | 0 | 0
With a Related Allowance | 0 | 0 | 0
Other Consumer |  |  |
Recorded Investment [Abstract] |  |  |
With No Related Allowance | 101 | 94 |
With a Related Allowance | 0 | 0 |
Unpaid Principal Balance [Abstract] |  |  |
With No Related Allowance | 100 | 95 |
With a Related Allowance | 0 | 0 |
Average Recorded Balance [Abstract] |  |  |
With No Related Allowance | 98 | 93 | 103
With a Related Allowance | 0 | 0 | 0
Interest Income Recognized [Abstract] |  |  |
With No Related Allowance | 1 | 0 | 6
With a Related Allowance | 0 | 0 | 0
Cash Basis Income [Abstract] |  |  |
With No Related Allowance | 0 | 0 | 0
With a Related Allowance | 0 | 0 | 0
Residential Portfolio Segment |  |  |
Recorded Investment [Abstract] |  |  |
With No Related Allowance | 1,605 | 1,269 |
With a Related Allowance | 294 | 333 |
Unpaid Principal Balance [Abstract] |  |  |
With No Related Allowance | 1,606 | 1,274 |
With a Related Allowance | 293 | 288 |
Average Recorded Balance [Abstract] |  |  |
With No Related Allowance | 1,437 | 1,184 | 872
With a Related Allowance | 314 | 167 | 0
Interest Income Recognized [Abstract] |  |  |
With No Related Allowance | 18 | 23 | 1
With a Related Allowance | 0 | 23 | 0
Cash Basis Income [Abstract] |  |  |
With No Related Allowance | 0 | 0 | 0
With a Related Allowance | $ 0 | $ 0 | $ 0

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