Summary of Significant Accounting Policies - Use of Estimates (Details) |
6 Months Ended |
|---|---|
|
Jun. 30, 2018
$ / participant
| |
| Accounting Policies [Abstract] | |
| Maximum exposure per participant | 100,000 |
| X | ||||||||||
- Definition Loss Contingency, Self Insurance, Maximum Exposure, Per Participant No definition available.
|
| X | ||||||||||
- References No definition available.
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