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Other Assets Accrued Interest Receivable and Other Assets (Details) - USD ($) $ in Thousands | Jun. 30, 2019 | Dec. 31, 2018
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Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] |  |
Accrued interest receivable | $ 6,387 | $ 5,684
Net deferred tax asset | 3,137 | 3,172
Investment in historic development entities | 2,016 | 1,653
Investment in a community development entity | 5,826 | 6,081
Investment in limited partnerships | 5,434 | 4,176
Investment in Trust II | 315 | 315
Fair value of interest rate swaps | 16,409 | 4,637
Prepaid expenses | 2,903 | 2,894
Other assets | 9,381 | 6,039
Total accrued interest receivable and other assets | $ 51,808 | $ 34,651

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