Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Financial Statements Details - Additional Information (Details)

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Condensed Consolidated Financial Statements Details - Additional Information (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Dec. 31, 2018
Long-term Equity Securities [Line Items]          
Long-term equity securities $ 1,138   $ 1,138   $ 392 [1]
Gain recognized due to change in fair value of investment     746 $ (402)  
Rezolute [Member]          
Long-term Equity Securities [Line Items]          
Long-term equity securities 1,100   1,100   $ 400
Gain recognized due to change in fair value of investment $ 31,000,000 $ 400 $ 700 $ 400  
[1] The condensed consolidated balance sheet as of December 31, 2018 has been derived from the audited consolidated financial statements as of that date included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2018.