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Organization - Additional Information (Detail) | 12 Months Ended
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Dec. 31, 2014
Organization Consolidation And Presentation Of Financial Statements [Abstract] |
Date of Acquisition | Apr. 30, 2006
Business Acquisition, Description of Acquired Entity | In April 2006, we completed the acquisition of Rhein Biotech GmbH (“Rhein” or “Dynavax Europe”), a wholly-owned subsidiary in Düsseldorf, Germany.

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