Business acquisition term of license agreement.

No definition available.

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- Definition

Commitment to procure equipment and construction

+ References

No definition available.

+ Details

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- Definition

Commitments and contingencies.

+ References

No definition available.

+ Details

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- Definition

Development-based milestone payments.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

Payment made under license agreement

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of liability recognized arising from contingent consideration in a business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=120321790&loc=d3e6927-128479

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 35
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=116859824&loc=d3e6819-128478

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 25
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6408-128476

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Balance Type:	credit
Period Type:	instant

- Definition

Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

+ Details

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Balance Type:	debit
Period Type:	instant

- Definition

Carrying amount as of the balance sheet date of expenditures made in advance of when the economic benefit of the cost will be realized, and which will be expensed in future periods with the passage of time or when a triggering event occurs.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.10)
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

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 210.7-03.10)
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

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Balance Type:	debit
Period Type:	instant

- 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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- Details

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Commitments and Contingencies - Additional Information (Details) - USD ($)			3 Months Ended
	Apr. 02, 2020	Jul. 12, 2019	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Commitments And Contingencies [Line Items]
Estimated future contingent consideration			$ 6,270,000	$ 5,390,000	$ 4,500,000	$ 2,750,000
Janssen Vaccines and Prevention BV [Member] \| License [Member] \| Maximum [Member]
Commitments And Contingencies [Line Items]
Development Based Milestone Payments	$ 1,200,000
Payment Made Under License Agreement			0
Lonza Manufacturing Agreement [Member] \| AdCOVID [Member]
Commitments And Contingencies [Line Items]
Commitment To Procure Equipment and Construction			23,000,000
Construction-in-progress capitalized			4,000,000
Summit Biosciences Development and Manufacturing Agreement [Member]
Commitments And Contingencies [Line Items]
Prepaid Expense under the agreement			$ 1,400,000
Spitfire Pharma, Inc. [Member] \| Sales Milestones [Member]
Commitments And Contingencies [Line Items]
Estimated future contingent consideration		$ 80,000,000
License agreement term		10 years