Sale Of Stock, Aggregate Offering Amount Authorized Per Agreement

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

+ Details

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Period Type:	instant

- 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

+ Details

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Period Type:	instant

- Definition

The cash inflow from the additional capital contribution to the entity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585

+ Details

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Balance Type:	debit
Period Type:	duration

- Definition

The cash inflow associated with the amount received from holders exercising their stock warrants.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585

+ Details

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Balance Type:	debit
Period Type:	duration

- Definition

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

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- 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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Balance Type:	na
Period Type:	instant

- 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
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Number of shares of stock issued attributable to transactions classified as other.

+ References

No definition available.

+ Details

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Data Type:	xbrli:sharesItemType
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Period Type:	duration

- 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

+ Details

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- Details

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- Details

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- Details

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- Details

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- Details

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Subsequent Events (Details) - USD ($)			2 Months Ended	12 Months Ended	35 Months Ended	36 Months Ended
Subsequent Events (Details) - USD ($)	Feb. 12, 2021	Jan. 21, 2021	Feb. 25, 2021	Dec. 31, 2020	Dec. 31, 2020	Feb. 12, 2021	Mar. 31, 2019	Aug. 31, 2018	Feb. 28, 2018
Subsequent event
Subsequent Event [Line Items]
Proceeds from issuance of stock	$ 60,700,000
Shares issued upon exercise of warrants			801,148
Net proceeds from warrant exercises			$ 1,800,000
Institutional Purchase Agreement \| Subsequent event
Subsequent Event [Line Items]
Number of shares sold (shares)	24,906,134
Price of shares sold (in dollars per share)	$ 2.45					$ 2.45
Number of shares called by warrants issued	12,453,067					12,453,067
Warrant exercise price (in dollars per share)	$ 2.90					$ 2.90
Warrants expiration term	5 years					5 years
Additional Purchase Agreement \| Subsequent event
Subsequent Event [Line Items]
Number of shares sold (shares)	1,632,652
Price of shares sold (in dollars per share)	$ 2.45					$ 2.45
Number of shares called by warrants issued	816,326					816,326
Warrant exercise price (in dollars per share)	$ 2.90					$ 2.90
Warrants expiration term	5 years					5 years
January 2021 Private Placement \| Subsequent event
Subsequent Event [Line Items]
Number of shares sold (shares)		12,500,000
Price of shares sold (in dollars per share)		$ 2.00
Number of shares called by warrants issued		6,250,000
Proceeds from issuance of stock		$ 25,000,000.0
Number of shares per each warrant		1
Warrant exercise price (in dollars per share)		$ 2.90
Warrants expiration term		5 years 6 months
H.C. Wainwright Sales Amended Agreement
Subsequent Event [Line Items]
Proceeds from issuance of stock				$ 8,500,000	$ 9,500,000
Aggregate offering amount authorized per agreement							$ 17,600,000	$ 25,000,000.0	$ 25,000,000.0
Stock issued (shares)				3,558,778	3,784,912
H.C. Wainwright Sales Amended Agreement \| Subsequent event
Subsequent Event [Line Items]
Proceeds from issuance of stock						$ 9,500,000
Stock issued (shares)						3,784,912