Commitments and Contingencies - Defined Contribution Plan (Details) - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2018 |
Dec. 31, 2016 |
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| Commitments and Contingencies Disclosure [Abstract] | ||
| Defined contribution plan, maximum annual contributions per employee, percent | 92.00% | |
| Defined benefit plan, employer matching contribution, percent of match (up to) | 3.00% | |
| Defined benefit plan, contributions by employer | $ 5.6 | $ 0.1 |
| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of discretionary contributions made by an employer to a defined contribution plan. No definition available.
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| X | ||||||||||
- Definition Percentage employer matches of the employee's percentage contribution matched. No definition available.
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| X | ||||||||||
- Definition Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan. No definition available.
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