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Summary of Significant Accounting Policies - Recent Transactions (Details) - USD ($) $ in Millions | Feb. 08, 2019 | Jul. 01, 2018
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Summary Of Significant Accounting Policies |  |
Special stock dividend (as percentage) |  | 4.00%
Hawthorn Bank | Branch Located in Branson, Missouri | Subsequent Event |  |
Summary Of Significant Accounting Policies |  |
Sale of Deposits | $ 10.6 |
Pre-tax gain on sale branch business | 2.1 |
Pre-tax gain related to sale of land and building | $ 1.7 |

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