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Inventories, Net - Additional Information (Detail) $ in Thousands | Dec. 31, 2020 USD ($)
--- | ---
Inventory Disclosure [Abstract] |
Prepaid manufacturing | $ 29,423

X
- Definition Prepaid Manufacturing. + References No definition available. + Details
Name: | dvax_PrepaidManufacturing
Namespace Prefix: | dvax_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_InventoryDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration