Description of business.

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- Definition

Funds raised through preferred equity financing, convertible note financings and completed initial public offering.

+ References

No definition available.

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- Definition

The cash inflow associated with the acquisition of business during the period (for example, cash that was held by the acquired business).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3179-108585

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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- Definition

The cumulative amount of the reporting entity's undistributed earnings or deficit.

+ 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(30)(a)(3))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(23)(a)(4))
-URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910

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=27012166&loc=d3e187085-122770

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Description of the Business - Additional Information (Detail) - USD ($) $ in Thousands		42 Months Ended
	Jan. 04, 2018	Mar. 31, 2021	Dec. 31, 2020	May 21, 2020
Description Of Business [Line Items]
Accumulated deficit		$ (635,171)	$ (577,530)
Funds raised through Series A and Series B Convertible Preferred Stock, convertible note financings and completed IPO		$ 942,000
AA Biopharma Inc.
Description Of Business [Line Items]
Cash received in connection with acquisition	$ 12,800
2027 Notes
Description Of Business [Line Items]
Debt instrument interest rate percentage		5.00%		5.00%