Annual report pursuant to Section 13 and 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
12 Months Ended
Dec. 31, 2018
USD ($)
Business Combinations [Abstract]  
Net gains and losses recognized during the period on equity securities $ 2,752
Less: Net gains and losses recognized during the period on equity securities sold during the period 113
Unrealized net gains recognized during the reporting period on equity securities still held at the reporting date $ 2,865