Other Investments - Components of Other Investments (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Other investments, net:
Equity method investments	$ 163,689	$ 166,209
Other equity investments	43,364	66,627
Other debt investments, net	91,094	92,569
Total other investments, net	$ 298,147	$ 325,405