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Related Party Transactions	3 Months Ended
Related Party Transactions	Mar. 31, 2019
Related Party Transaction, Due from (to) Related Party [Abstract]
Related Party Transactions	Related Party Transactions AstraZeneca PLC Pam P. Cheng, a member of our board of directors, joined AstraZeneca PLC as Executive Vice President, Operations and Information Technology in June 2015. We sell biocatalyst products to AstraZeneca PLC and its controlled purchasing agents and contract manufacturers. We recognized de minimis revenue and $0.3 million of product revenue in the three months ended March 31, 2019 and 2018, respectively, from transactions with AstraZeneca PLC and its controlled purchasing agents and contract manufacturers. At March 31, 2019 and December 31, 2018, we had zero and $0.2 million of accounts receivables from AstraZeneca, PLC, and its controlled purchasing agents and contract manufacturers, respectively.