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Commitments and Contingencies - Other Information Related to Leases (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Commitments and Contingencies
Cash paid for amounts included in the measurement of operating lease liabilities	$ 1,773
Right-to-use assets obtained in exchange for new finance lease liabilities	$ 16
Weighted-average remaining lease term - finance leases	3 years
Weighted-average remaining lease term - operating leases	2 years
Weighted-average discount rate - finance leases	7.28%
Weighted-average discount rate - operating leases	6.28%

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

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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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Amount of operating lease income from lease payments paid and payable to lessor. Excludes variable lease payments not included in measurement of lease receivable.

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Amount of increase in right-of-use asset obtained in exchange for finance lease liability.

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