Quarterly report pursuant to Section 13 or 15(d)

Collaboration and Stock Purchase Agreements - Condensed consolidated financial statements (Detail)

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Collaboration and Stock Purchase Agreements - Condensed consolidated financial statements (Detail) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2019
Jan. 31, 2019
Gain on deconsolidation of Caelum    
Fair value of Caelum $ 11,193  
Net liabilities deconsolidated 13,177 $ 13,177
Non-controlling interest share (4,849)  
Write off of MSA fees due Fortress (1,000)  
Gain on deconsolidation of Caelum $ 18,521