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No definition available.

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- Definition

Number of Groups of Warrants

+ References

No definition available.

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- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
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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

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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- Definition

Number of warrants or rights outstanding.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Section S99
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-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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- Definition

Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

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- Definition

Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects.

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-Publisher FASB
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- Definition

Per share or per unit amount of equity securities issued.

+ References

No definition available.

+ Details

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- Definition

Period between issuance and expiration of outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
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-SubTopic 10
-Section 50
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Common Stock Warrants (Narrative) (Details) $ / shares in Units, $ in Thousands	1 Months Ended	3 Months Ended		6 Months Ended
	Apr. 30, 2019 $ / shares item shares	Jun. 30, 2019 USD ($) shares	Jun. 30, 2018 USD ($)	Jun. 30, 2019 USD ($) shares	Jun. 30, 2018 USD ($)	Apr. 11, 2019 $ / shares shares	Apr. 09, 2019 $ / shares shares	Dec. 31, 2018 USD ($)	Jan. 31, 2018 $ / shares shares
Class of Warrant or Right [Line Items]
Fair value of warrant liability \| $		$ 166		$ 166				$ 1,497
Change in fair value of common stock warrant liability \| $		536	$ (1,427)	1,330	$ (924)
Number of groups of warrants \| item	3
2017 Offering [Member]
Class of Warrant or Right [Line Items]
Fair value of warrant liability \| $		$ 100		$ 100
Equity Offering and Private Placement [Member]
Class of Warrant or Right [Line Items]
Equity offering and private placement close date				2018-02
Number of shares of common stock called by warrants \| shares									4,004,324
Warrants exercise price per share									$ 1.55
Warrants outstanding \| shares		3,974,324		3,974,324
Fair value of warrant liability \| $		$ 100		$ 100
Registered Direct Offering [Member]
Class of Warrant or Right [Line Items]
Common stock, price per share							$ 0.50
Unregistered [Member] \| Registered Direct Offering [Member]
Class of Warrant or Right [Line Items]
Number of shares of common stock called by warrants \| shares	6,000,000					3,000,000	3,000,000
Warrants exercise price per share	$ 0.78					$ 0.78	$ 0.78
Warrant term	5 years 6 months					5 years 6 months	5 years 6 months
Prefunded [Member] \| Registered Direct Offering [Member]
Class of Warrant or Right [Line Items]
Number of shares of common stock called by warrants \| shares	4,000,000					4,000,000
Warrants exercise price per share	$ 0.01					$ 0.01
Common stock, price per share	$ 0.49					$ 0.49
Warrant term	5 years 6 months
Placement Agent [Member] \| Registered Direct Offering [Member]
Class of Warrant or Right [Line Items]
Number of shares of common stock called by warrants \| shares	240,000
Warrants exercise price per share	$ 0.55
Warrant term	5 years