Leases -Operating Lease Maturity (Details) $ in Thousands	Jun. 30, 2019 USD ($)
Leases
2019 (remaining 6 months)	$ 305
2020	663
2021	717
2022	737
2023	1
Total undiscounted lease payments	2,423
Less: imputed interest	(388)
Total operating lease liabilities	$ 2,035
Weighted average remaining lease term	3 years 4 months 24 days
weighted average incremental borrowing rate (as a percent)	9.10%

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Amount of lessee's undiscounted obligation for lease payments for operating lease.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 6
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Amount of lessee's undiscounted obligation for lease payments for operating lease, due in fifth fiscal year following latest fiscal year.

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Amount of lessee's undiscounted obligation for lease payments for operating lease, due in fourth fiscal year following latest fiscal year.

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Amount of lessee's undiscounted obligation for lease payments for operating lease, due in third fiscal year following latest fiscal year.

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Amount of lessee's undiscounted obligation for lease payments for operating lease, due in second fiscal year following latest fiscal year.

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Amount of lessee's undiscounted obligation for lease payments for operating lease having an initial or remaining lease term in excess of one year due in remainder of fiscal year following latest fiscal year.

+ References

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-SubTopic 20
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Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for operating lease.

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Present value of lessee's discounted obligation for lease payments from operating lease.

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

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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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