Related-Party Transactions	12 Months Ended
Related-Party Transactions	Dec. 31, 2012
Related-Party Transactions
Related-Party Transactions	16. Related-Party Transactions In December 2011, the Company entered into a Unit Purchase Agreement with Royalty Opportunities S.àr.l ("ROS") (see Note 10). Pursuant to the Unit Purchase Agreement, the Company sold 100% of its equity interests in TCD to ROS for a cash payment of $27.0 million upon closing, assumption of assets and liabilities, and a potential milestone payment of $3.0 million payable upon the occurrence of certain conditions. ROS is an affiliate of Orbimed Advisors LLC, one of the Company's Common Stock holders.

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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