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Other Assets Accrued Interest Receivable and Other Assets (Details) - USD ($) $ in Thousands | Sep. 30, 2020 | Dec. 31, 2019
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Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] |  |
Accrued interest receivable | $ 9,938 | $ 5,760
Net deferred tax asset | 7,588 | 5,353
Investment in historic development entities | 2,345 | 2,216
Investment in a community development entity | 5,189 | 5,571
Investment in limited partnerships | 5,641 | 4,476
Investment in Trust II | 315 | 315
Fair value of interest rate swaps | 58,210 | 18,346
Prepaid expenses | 2,402 | 2,285
Other assets | 7,930 | 4,184
Total accrued interest receivable and other assets | $ 99,558 | $ 48,506

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