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Revenue Recognition - Additional Information (Detail) | Mar. 31, 2018 USD ($)
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Revenue Recognition [Abstract] |
Reserves classified as reduction of accounts receivable | $ 66,000
Reserves classified as accrued liabilities | $ 19,000

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- Definition Product revenue allowance and reserves classified as accrued liabilities. + References No definition available. + Details
Name: | dvax_ProductRevenueAllowanceAndReservesClassifiedAsAccruedLiabilities
Namespace Prefix: | dvax_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Product revenue allowance and reserves classified as reduction in accounts receivable. + References No definition available. + Details
Name: | dvax_ProductRevenueAllowanceAndReservesClassifiedAsReductionInAccountsReceivable
Namespace Prefix: | dvax_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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