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Investment in Inex Bio, Inc - Summary of Net Consideration Paid to Holdings (Detail) - Inex Bio Holdings
$ in Thousands
9 Months Ended
Sep. 30, 2015
USD ($)
Business Acquisition [Line Items]  
Payments to acquire business $ 6,518
Fair value of warrants 22,747
Less cash paid to acquire shares in Inex Bio (1,100)
Aggregate purchase price $ 28,165