Fair Value Measurements - Assets and Liabilities Measured at Fair Value (Details) - USD ($)	Sep. 30, 2018	Dec. 31, 2017
Liabilities measured at fair value on a recurring basis
Warrant liability	$ 78,000	$ 669,000
Liability transfers from Level 1 to Level 2		0
Liability transfers from Level 2 to Level 1	0
Level 1
Liabilities measured at fair value on a recurring basis
Warrant liability	0	0
Level 2
Liabilities measured at fair value on a recurring basis
Warrant liability	0	0
Level 3
Liabilities measured at fair value on a recurring basis
Warrant liability	$ 78,000	$ 669,000

Fair value of warrant liability.

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount of transfers of liabilities measured on a recurring basis out of Level 1 of the fair value hierarchy into Level 2.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bb)
-URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258

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- Definition

Amount of transfers of liabilities measured on a recurring basis out of Level 2 of the fair value hierarchy into Level 1.

+ References

+ Details

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