The number of securities for which warrants become exercisable.

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

Fair value of stock issued on exercise of warrants.

+ References

No definition available.

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- Definition

Represents the exchange ratio of warrants to common stock under the cashless exercise feature.

+ References

No definition available.

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- Definition

The threshold period from issuance date from which the warrants are exercisable.

+ References

No definition available.

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- Definition

Represents the number of contingent settlement methods.

+ References

No definition available.

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- Definition

The number of warrants exercised.

+ 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://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644

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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

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- Definition

Number of new stock issued during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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- References

No definition available.

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- Definition

Value of outstanding derivative securities that permit the holder the right to purchase securities (usually equity) from the issuer at a specified price.

+ 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)
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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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- Definition

Fair value portion of warrants not settleable in cash classified as equity.

+ 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
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-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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Warrants - Ladenburg Warrants (Details)		1 Months Ended		12 Months Ended
Warrants - Ladenburg Warrants (Details)	Jul. 23, 2019 USD ($) shares	May 31, 2020 USD ($) $ / shares item shares	Mar. 31, 2019 USD ($) $ / shares shares	Dec. 31, 2020 USD ($) $ / shares shares	May 22, 2020 $ / shares	Apr. 30, 2020 USD ($) $ / shares shares	Dec. 31, 2019 USD ($) $ / shares	Oct. 31, 2018 $ / shares shares	Aug. 28, 2018 shares
Warrants
Warrants to purchase (in shares) \| shares									9,580
Warrant liability \| $				$ 179,000			$ 3,000
Series A Warrants \| Stock price
Warrants
Warrants - Measurement input				0.82			0.65
Series A Warrants \| Strike price
Warrants
Warrants - Measurement input				787.50			787.50
Series A Warrants \| Expected life
Warrants
Term of warrant				1 year 4 months 28 days			2 years 4 months 28 days
Series A Warrants \| Volatility
Warrants
Warrants - Measurement input				148			143.41
Series A Warrants \| Risk free rate
Warrants
Warrants - Measurement input				0.13			1.62
Series 3 warrants
Warrants
Warrants to purchase (in shares) \| shares		8,670,852
Exercise price (in dollars per share)		$ 0.53
Warrants exercisable period		6 months
Term of warrant		5 years
Contingent settlement methods \| item		2
Warrants conversion \| shares		1		1
Warrant liability \| $		$ 3,700,000
Warrants exercised \| shares				8,456,352
Aggregate fair value of the common stocks issued by the exercise of Warrants \| $				$ 6,100,000
Series 3 warrants \| Stock price
Warrants
Warrants - Measurement input		0.05		0.82	0.44
Series 3 warrants \| Strike price
Warrants
Warrants - Measurement input		0.44		0.00	0.05
Series 3 warrants \| Expected life
Warrants
Term of warrant		5 years 6 months		4 years 10 months 21 days	5 years 6 months
Series 3 warrants \| Volatility
Warrants
Warrants - Measurement input		141		142	142
Series 3 warrants \| Risk free rate
Warrants
Warrants - Measurement input		0.34		0.36	0.34
Underwriter Warrants
Warrants
Warrants to purchase (in shares) \| shares						100,780		17,142
Exercise price (in dollars per share)						$ 2.50		$ 52.50
Warrant liability \| $						$ 32,000
Underwriter Warrants \| Stock price
Warrants
Warrants - Measurement input				0.82		2.50	0.65
Underwriter Warrants \| Strike price
Warrants
Warrants - Measurement input				52.50		0.45	52.50
Underwriter Warrants \| Expected life
Warrants
Term of warrant				2 years 9 months 4 days		4 years 3 months	3 years 9 months 4 days
Underwriter Warrants \| Volatility
Warrants
Warrants - Measurement input				156		141	143.00
Underwriter Warrants \| Risk free rate
Warrants
Warrants - Measurement input				0.17		0.29	1.69
March 2019 LOC Warrants
Warrants
Warrants exercisable \| shares	45,750
Fair value of warrants \| $	$ 71,000
Securities Purchase Agreement \| March 2019 Ladenburg Warrants
Convertible Promissory Notes and Common Stock Warrants [Line Items]
Shares issued (in shares) \| shares			19,019
Warrants
Warrants to purchase (in shares) \| shares			761
Exercise price (in dollars per share)			$ 17.50
Warrant liability \| $			$ 13,000
Securities Purchase Agreement \| March 2019 Ladenburg Warrants \| Stock price
Warrants
Warrants - Measurement input			17.50
Securities Purchase Agreement \| March 2019 Ladenburg Warrants \| Strike price
Warrants
Warrants - Measurement input			18.90
Securities Purchase Agreement \| March 2019 Ladenburg Warrants \| Expected life
Warrants
Term of warrant			5 years
Securities Purchase Agreement \| March 2019 Ladenburg Warrants \| Volatility
Warrants
Warrants - Measurement input			146
Securities Purchase Agreement \| March 2019 Ladenburg Warrants \| Risk free rate
Warrants
Warrants - Measurement input			2.21