Goodwill and Intangible Assets - Allocation of Purchase Price Consideration (Details) - Lesinurad transaction $ in Thousands	Jun. 02, 2016 USD ($)
Preliminary allocation of purchase consideration
Cash portion of consideration	$ 100,000
Contingent consideration	67,885
Total purchase consideration	$ 167,885

Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination.

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