Accrued Expenses and Other Current Liabilities - Narrative (Details) |
12 Months Ended | |
|---|---|---|
Dec. 31, 2018 |
Dec. 31, 2017 |
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| Payables and Accruals [Abstract] | ||
| Financed insurance premium interest rate, percent | 3.45% | 2.75% |
| X | ||||||||||
- Definition Supplementary Insurance Information, Financed Insurance Premium Interest Rate No definition available.
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| X | ||||||||||
- References No definition available.
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