Aggregate number of shares of common stock available for sale in offering.

No definition available.

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- Definition

Common stock warrants issued.

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No definition available.

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- Definition

Outstanding voting stock acquisition threshold percentage to assume warrant obligations.

+ References

No definition available.

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- Definition

Proceeds from issuance of equity net.

+ References

No definition available.

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- Definition

Warrants exercisable right limitation percentage.

+ References

No definition available.

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- Definition

Number of securities into which each warrant or right may be converted. For example, but not limited to, each warrant may be converted into two shares.

+ 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.

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- Definition

Number of warrants or rights outstanding.

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- Definition

Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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- Definition

Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.

+ References

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- Definition

Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

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- Definition

Per share or per unit amount of equity securities issued.

+ References

No definition available.

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- Definition

Number of new stock issued during the period.

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

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Subsequent Events (Details) - USD ($)					1 Months Ended	3 Months Ended	12 Months Ended
Subsequent Events (Details) - USD ($)	Mar. 10, 2020	Feb. 24, 2020	Feb. 10, 2020	Apr. 28, 2017	Mar. 31, 2020	Dec. 31, 2019	Dec. 31, 2019	Feb. 25, 2020	Dec. 11, 2019	Dec. 10, 2019	Dec. 31, 2018	Dec. 06, 2013	Mar. 22, 2013
Subsequent Event [Line Items]
Warrants outstanding													92,277
Common stock, shares outstanding (in shares)						20,691,301	20,691,301		20,200,000	261,900,000	16,641,999
Offering price (in dollars per share)				$ 1.00
Preferred stock, par value (in dollars per share)												$ 0.01
Net proceeds from public offering				$ 23,200,000
Severance costs						$ 1,400,000
Subsequent Event
Subsequent Event [Line Items]
Warrants outstanding		3,638,780
Preferred stock, par value (in dollars per share)	$ 0.01
Net proceeds from public offering	$ 13,400,000
Minimum
Subsequent Event [Line Items]
Percentage of warrants exercisability							4.99%
Outstanding voting stock acquisition							50.00%
Series C Warrants \| Subsequent Event
Subsequent Event [Line Items]
Stock issued, shares	3,308,823
Series D Warrants \| Subsequent Event
Subsequent Event [Line Items]
Stock issued, shares	3,308,823
Common Class A \| Subsequent Event
Subsequent Event [Line Items]
Stock issued, shares	14,121,766
Offering price (in dollars per share)	$ 0.68
Common Class B \| Subsequent Event
Subsequent Event [Line Items]
Stock issued, shares	7,937,057
Offering price (in dollars per share)	$ 0.68
Exchange Agreement \| Subsequent Event
Subsequent Event [Line Items]
Warrants outstanding		3,373,900
Common stock warrants issued		2,040,757
Warrants to purchase common shares		160,226
Exchange Agreement \| Series B Warrant \| Subsequent Event
Subsequent Event [Line Items]
Warrants outstanding								264,880
Purchase Agreement \| Subsequent Event
Subsequent Event [Line Items]
Sale of common stock in an at- the-market offering			$ 25,000,000
Stock issued, shares			343,171
Scenario, Forecast
Subsequent Event [Line Items]
Severance costs					$ 800,000
Common Stock \| Series B Warrant
Subsequent Event [Line Items]
Number of common stock or warrants in each unit				0.058
Common Stock \| Series B Warrant \| Subsequent Event
Subsequent Event [Line Items]
Common stock, shares outstanding (in shares)	292,178
Common Stock \| Exchange Agreement \| Series B Warrant \| Subsequent Event
Subsequent Event [Line Items]
Number of common stock or warrants in each unit		0.61