Other Investments - Components of Other Investments (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Other investments, net:
Equity method investments	$ 146,232	$ 166,209
Other equity investments	35,057	66,627
Other debt investments, net	94,584	92,569
Total other investments, net	$ 275,873	$ 325,405