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Subsequent Events (Details) - USD ($) | Oct. 30, 2018 | Dec. 31, 2018
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Hurricane Michael 2018 | Scenario, Forecast |  |
Subsequent Event [Line Items] |  |
Estimate of possible loss |  | $ 100,000,000
State Farm Mutual Automobile Insurance Company | Subsequent Event | Private Placement |  |
Subsequent Event [Line Items] |  |
Investment Agreement, number of shares issued in transaction (in shares) | 1,947,496 |
Investment Agreement, consideration received per transaction | $ 250,000,000 |

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