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

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 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.

+ Details

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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

Cash received on stock transaction after deduction of issuance costs.

+ References

No definition available.

+ Details

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- Definition

The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

+ References

No definition available.

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- Definition

Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

+ References

No definition available.

+ Details

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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.

+ 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
-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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Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Millions		1 Months Ended	6 Months Ended
	Jul. 10, 2020	Aug. 06, 2020	Jun. 30, 2020
H.C. Wainwright Sales Amended Agreement
Subsequent Event [Line Items]
Number of shares sold (in shares)			681,034
Proceeds from stock transaction			$ 1.3
Subsequent Event \| Private placement
Subsequent Event [Line Items]
Number of shares sold (in shares)	969,694
Price of shares sold (in dollars per share)	$ 2.0625
Number of shares called by warrants issued	484,847
Proceeds from stock transaction	$ 2.0
Number of shares called by each warrant	1
Warrant exercise price (in dollars per share)	$ 2.0625
Warrants expiration term	5 years 6 months
Subsequent Event \| H.C. Wainwright Sales Amended Agreement
Subsequent Event [Line Items]
Number of shares sold (in shares)		2,779,299
Proceeds from stock transaction		$ 6.9