Subsequent Events (Details) - USD ($)		6 Months Ended
Jun. 11, 2020	Jun. 30, 2020
Subsequent Event [Line Items]
Sale of stock, number of shares issued in transaction (in shares)		100,847,810
SOBI Purchase Agreement
Subsequent Event [Line Items]
Sale of stock, number of shares issued in transaction (in shares)	5,416,390
Share price (in dollars per share)	$ 4.6156
Sale of stock, percentage of ten-day volume weighted average price of common stock	120.00%
Sale common stock	$ 25,000,000
Collaborative Arrangement
Subsequent Event [Line Items]
Upfront cash payment	75,000,000
Sales milestone payments	$ 630,000,000

License And Option Agreement, Sales Milestone Payments That May Be Received

No definition available.

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- Definition

License And Option Agreement, Upfront Cash Payment

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

Sale of Stock, Percentage Of Ten-Day Volume Weighted Average Price Of Common Stock

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Cash received on stock transaction after deduction of issuance costs.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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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- 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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Data Type:	num:perShareItemType
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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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- Details

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- Details

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