Summary of Significant Accounting Policies - Components of Lease Expense (Details)	Dec. 31, 2019
Weighted Average Remaining Lease Term
Weighted Average Remaining Lease Term - Operating Leases	3 years 4 months 24 days
Weighted Average Remaining Lease Term - Financing Leases	2 years 10 months 10 days
Weighted Average Discount Rate
Weighted Average Discount Rate - Operating Leases	8.94%
Weighted Average Discount Rate - Financing Leases	9.28%

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Weighted average discount rate for finance lease calculated at point in time.

+ References

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Weighted average remaining lease term for finance lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

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