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Subsequent Events (Details) - USD ($)			1 Months Ended	2 Months Ended	12 Months Ended
	Mar. 09, 2020	Feb. 07, 2020	May 31, 2018	Mar. 11, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Feb. 20, 2020
Subsequent Event [Line Items]
Proceeds from issuance of common stock					$ 9,089,010	$ 29,227,776	$ 94,347,922
Sales Agreement
Subsequent Event [Line Items]
Proceeds from issuance of common stock					$ 9,100,000
Sales Agreement | Common stock
Subsequent Event [Line Items]
Authorized amount			$ 100,000,000.0
Agent fee			3.00%		3.00%
Sale of stock, price per share ($ per share)					$ 2.78
Sales Agreement | Common stock | Subsequent Event
Subsequent Event [Line Items]
Authorized amount	$ 250,000,000.0	$ 200,000,000.0
Number of shares issued in transaction (in shares)				43,148,952
Proceeds from issuance of common stock				$ 208,200,000
Sale of stock, price per share ($ per share)				$ 4.92
Plumbline Life Sciences
Subsequent Event [Line Items]
Percentage of ownership					15.00%	15.10%
Plumbline Life Sciences | Subsequent Event
Subsequent Event [Line Items]
Percentage of ownership								19.90%

X

- Definition

Stock Sales Agreement, Agent Fee

+ References

No definition available.

+ Details

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- Definition

Stock Sales Agreement, Maximum Authorized Amount

+ References

No definition available.

+ Details

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X

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

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X

- 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=118932676&loc=d3e3255-108585

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X

- 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

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X

- 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.

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- Details

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