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Organization and Description of Business (Details) $ / shares in Units, $ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Oct. 31, 2018 USD ($) $ / shares shares | Dec. 31, 2015 platform
Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |
Number of operating platforms consolidated | platform |  | 2
Subsidiary, Sale of Stock [Line Items] |  |
Consideration received on stock transaction | $ | $ 109.4 |
IPO |  |
Subsidiary, Sale of Stock [Line Items] |  |
Number of shares issued in stock transaction | shares | 7,840,908 |
Price per share of stock transaction (in dollars per share) | $ / shares | $ 15.00 |
Underwriters' Option |  |
Subsidiary, Sale of Stock [Line Items] |  |
Number of shares issued in stock transaction | shares | 1,022,727 |
Price per share of stock transaction (in dollars per share) | $ / shares | $ 1.05 |

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