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Other Operating Expenses (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Other Operating Expenses [Abstract] |  |  |
General and administrative expenses | $ 1,877 | $ 1,905 | $ 1,545
Travel and other employee expenses | 1,530 | 1,298 | 1,354
Partnership income(1) | 0 | 0 | (790)
Other expenses | 23 | 12 | 129
Total other non-interest expense | $ 3,430 | $ 3,215 | $ 2,238

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