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Cover
Dec. 05, 2020
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date Dec. 05, 2020
Entity File Number 0-26770
Entity Registrant Name NOVAVAX, INC.
Entity Central Index Key 0001000694
Entity Tax Identification Number 22-2816046
Entity Incorporation, State or Country Code DE
Entity Address, Address Line One 21 Firstfield Road
Entity Address, City or Town Gaithersburg
Entity Address, State or Province MD
Entity Address, Postal Zip Code 20878
City Area Code 240
Local Phone Number 268-2000
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock, Par Value $0.01 per share
Trading Symbol NVAX
Security Exchange Name NASDAQ
Entity Emerging Growth Company false