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Leases - Right-of-Use Assets and Related Lease Liabilities (Details) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019 USD ($)	Sep. 30, 2019 USD ($)
Leases [Abstract]
Cash paid for operating lease liabilities	$ 157	$ 466
Operating lease cost	$ 144	$ 433
Weighted-average remaining lease term	2 years 6 months	2 years 6 months
Weighted-average discount rate	9.66%	9.66%

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- References

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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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-Publisher FASB
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Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

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

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-Publisher FASB
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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.

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-Publisher FASB
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