Operating Leases - Lease Costs (Details) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)
Lease Cost:
Operating lease cost (including related operating costs)	$ 71	$ 146
Short-term lease cost	53	129
Total lease cost	$ 124	$ 275
Supplemental Information:
Weighted-average remaining lease term - operating leases (in years)	1 year 3 months	1 year 3 months
Weighted-average discount rate - operating leases	12.00%	12.00%

Supplemental Lease Information [Abstract]

No definition available.

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- Definition

Amount of lease cost recognized by lessee for lease contract.

+ References

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- References

No definition available.

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- Definition

Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

+ References

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- Definition

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

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- Definition

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.

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- Definition

Amount of short-term lease cost, excluding expense for lease with term of one month or less.

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