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Organization and Basis of Presentation	3 Months Ended
Organization and Basis of Presentation	Mar. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Basis of Presentation	Organization and Basis of Presentation Zogenix, Inc. (together with its wholly-owned subsidiary, Zogenix Europe Limited (Zogenix Europe), the Company), is a pharmaceutical company committed to developing and commercializing central nervous system (CNS) therapies that address specific clinical needs for people living with orphan and other CNS disorders who need innovative treatment alternatives to help them improve their daily functioning. The Company's activities are focused on development of two product candidates, ZX008 and Relday, as well as performing contract manufacturing services in accordance with a supply agreement in conjunction with the sale of its Sumavel DosePro business in 2014. The Company divested its Zohydro ER® business on April 24, 2015 (see Note 4). Zohydro ER activity has been excluded from continuing operations for all periods herein and reported as discontinued operations as a result of the sale. On July 1, 2015, the Company effected a 1-for-8 reverse stock split of its common stock and changed its authorized shares of common stock to 50,000,000 shares. All historical per share information presented herein has been adjusted to reflect the effect of the reverse stock split and change to the authorized shares of common stock.