Quarterly report pursuant to Section 13 or 15(d)

Acquisitions, Investments and Licenses - Schedule of Net Gains and Losses on Equity Securities (Details)

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Acquisitions, Investments and Licenses - Schedule of Net Gains and Losses on Equity Securities (Details)
$ in Thousands
6 Months Ended
Jun. 30, 2018
USD ($)
Business Combinations [Abstract]  
Net gains recognized during the period on equity securities $ 11,289
Less: Net losses realized during the period on equity securities sold during the period (113)
Unrealized net gains and losses recognized during the period on equity securities still held at the reporting date $ 11,402