The fair value of outstanding warrants.

No definition available.

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- Definition

Number of warrants (or share units) issued during the current period.

+ References

No definition available.

+ Details

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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
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(i)(4))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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- Definition

Amount of expense (income) related to adjustment to fair value of warrant liability.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 480
-SubTopic 10
-Section 25
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=109262497&loc=d3e20148-110875

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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

Price of a single share of a number of saleable stocks of a company.

+ References

No definition available.

+ Details

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- Definition

Value of input used to measure outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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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
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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Warrants - Fair Value Warrants Assumptions (Details)				12 Months Ended
Warrants - Fair Value Warrants Assumptions (Details)	Nov. 26, 2018 $ / shares shares	Dec. 11, 2017 $ / shares shares	Dec. 04, 2017 USD ($) $ / shares shares	Dec. 31, 2019 USD ($) $ / shares shares	Dec. 31, 2018 USD ($) $ / shares shares	Dec. 31, 2017 USD ($) $ / shares shares	Sep. 27, 2018 $ / shares	Dec. 31, 2016 $ / shares	Oct. 29, 2013
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Change in fair value of warrant liabilities					$ 2,791,000	$ (646,000)
Warrants issued \| shares				58,334	15,750	1,890,602
Exercise price of warrants (in dollars per share) \| $ / shares				$ 7.21	$ 6.35	$ 5.21		$ 3.06
Share Price \| $ / shares						$ 5.325	$ 3.00
2019 Warrants
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Weighted average contractual term				7 years
2019 Warrants \| Risk Free Interest Rate
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Warrant measurement input				0.028
2019 Warrants \| Volatility
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Warrant measurement input				0.97
2018 Warrants
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Weighted average contractual term				7 years
2018 Warrants \| Risk Free Interest Rate
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Warrant measurement input				0.030
2018 Warrants \| Volatility
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Warrant measurement input				0.85
2017 Warrants
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Weighted average contractual term				1 year
2017 Warrants \| Risk Free Interest Rate
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Warrant measurement input				0.017
2017 Warrants \| Volatility
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Warrant measurement input				0.61
2016 Warrants
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Weighted average contractual term				7 years
2016 Warrants \| Risk Free Interest Rate
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Warrant measurement input				0.018
2016 Warrants \| Volatility
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Warrant measurement input				0.73
2014 Warrants
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Weighted average contractual term				5 years
2014 Warrants \| Risk Free Interest Rate
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Warrant measurement input				0.016
2014 Warrants \| Volatility
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Warrant measurement input				0.70
2013 Warrants
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Weighted average contractual term				5 years					5 years
2013 Warrants \| Risk Free Interest Rate
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Warrant measurement input				0.014
2013 Warrants \| Volatility
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Warrant measurement input				0.64
Common warrants
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Warrants issued \| shares	15,750	1,783,587	1,783,587
Exercise price of warrants (in dollars per share) \| $ / shares	$ 3.06	$ 5.25	$ 5.25
Fair Value Of Warrants			$ 2,064,000			$ 2,683,000
Share Price \| $ / shares			$ 5.00			$ 5.60
Weighted average contractual term	7 years
Common warrants \| Risk Free Interest Rate
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Warrant measurement input			1.66			1.76
Common warrants \| Volatility
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Warrant measurement input			61			62
Placement agent warrants
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Warrants issued \| shares		107,015	107,015
Exercise price of warrants (in dollars per share) \| $ / shares		$ 6.6562	$ 6.6562
Fair Value Of Warrants			$ 81,000			$ 108,000
Share Price \| $ / shares			$ 5.00			$ 5.60
Weighted average contractual term		1 year
Placement agent warrants \| Risk Free Interest Rate
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Warrant measurement input			1.66			1.76
Placement agent warrants \| Volatility
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Warrant measurement input			61			62