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Revenue Recognition - Summary of Balances and Activities in our Contract Asset Account (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023
Contract with Customer, Receivable, after Allowance for Credit Loss, Noncurrent [Abstract] |  |
Reclassifications | $ 0 | $ 71,307
Balance at end of period | 71,307 |
CpG 1018 adjuvant |  |
Contract with Customer, Asset, after Allowance for Credit Loss, Current [Abstract] |  |
Balance at beginning of period | 1,389 | 71,965
Additions | 8,642 | 17,650
Subtractions | (9,680) | (16,919)
Reclassification | 0 | (71,307)
Balance at end of period | 351 | 1,389
Contract with Customer, Receivable, after Allowance for Credit Loss, Noncurrent [Abstract] |  |
Balance at beginning of period | 71,307 | 0
Additions | 0 | 0
Subtractions | $ 0 | 0
Balance at end of period |  | $ 71,307

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- Definition Contract with Customer, Asset, Change in Method, Credit Loss Expense (Reversal), Current + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Contract with Customer, Asset, Change in Method, Credit Loss Expense (Reversal), Noncurrent + References No definition available. + Details
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- Definition Contract with Customer, Asset, Purchase, Current + References No definition available. + Details
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Namespace Prefix: | dvax_
Data Type: | xbrli:monetaryItemType
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Period Type: | duration

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- Definition Contract with Customer, Asset, Purchase, Noncurrent + References No definition available. + Details
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- Definition Contract with Customer, Asset, Sale, Current + References No definition available. + Details
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Namespace Prefix: | dvax_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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- Definition Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479837/606-10-45-3 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479837/606-10-45-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-8 + Details
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Period Type: | instant

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- Definition Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time, classified as noncurrent. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479837/606-10-45-3 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479837/606-10-45-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-8 + Details
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