Related Party Transactions	9 Months Ended
Related Party Transactions	Sep. 30, 2014
Related Party Transaction, Due from (to) Related Party [Abstract]
Related Party Transactions	Related Party Transactions Exela PharmSci, Inc. We signed a commercialization agreement with Exela in 2007, whereby Exela agreed to pay to us a contractual percentage share of Exela’s net profit from the sales of licensed products. CMEA Ventures, which owns approximately 7.4% of Codexis' common stock, owns over 10% of Exela’s outstanding capital stock. Thomas R. Baruch, one of Codexis' directors, also serves on the board of directors of Exela and, as a limited partner in the CMEA Ventures funds that hold such shares of Exela, has an indirect pecuniary interest in the shares of Exela held by CMEA Ventures. We recognized revenue from the revenue sharing arrangement of $1.5 million for the three months and $5.6 million for the nine months ended September 30, 2014, and $0.8 million for the three months and $2.3 million for the nine months ended September 30, 2013. We had no receivables from Exela at September 30, 2014. Alexander A. Karsner Alexander A. Karsner was a member of Codexis' board of directors until the expiration of his term at the close of our annual shareholder meeting on June 11, 2014. In addition, Mr. Karsner provided consulting services to Codexis through June 30, 2014. Amounts paid to Mr. Karsner for consulting services was nil for the three months and $60,000 for the nine months ended September 30, 2014, and $30,000 for the three months and $90,000 for the nine months ended September 30, 2013.

The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.

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