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Acquisition of Novavax CZ - Additional Information (Details) - USD ($) $ in Thousands		12 Months Ended
	May 27, 2020	Dec. 31, 2020	Dec. 31, 2022	Dec. 31, 2021
Business Combination Segment Allocation [Line Items]
Goodwill		$ 135,379	$ 126,331	$ 131,479
Novavax CZ
Business Combination Segment Allocation [Line Items]
Goodwill	$ 70,662
Loss on acquiree since acquisition date		11,300
Business combination, acquisition related costs		$ 2,700
Novavax CZ \| Minimum
Business Combination Segment Allocation [Line Items]
Property and equipment useful life	4 years
Novavax CZ \| Maximum
Business Combination Segment Allocation [Line Items]
Property and equipment useful life	25 years