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Summary of Significant Accounting Policies - Narrative (Details) $ in Millions | Jul. 02, 2019 USD ($) | Jun. 30, 2019 market
--- | --- | ---
Schedule of Equity Method Investments [Line Items] |  |
Number of markets entity operates | market |  | 11
Subsequent Event | Advocate Capital, Inc. |  |
Schedule of Equity Method Investments [Line Items] |  |
Acquisition, cash price | $ | $ 59 |
Bankers Healthcare Group, LLC |  |
Schedule of Equity Method Investments [Line Items] |  |
Ownership interest (as percent) |  | 49.00%

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