Other Investments - Summarized Investee Financial Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Schedule of Equity Method Investments [Line Items]
Revenues	$ 96,415	$ 98,468	$ 269,875	$ 205,270
Expenses	113,398	129,142	312,181	257,136
Net Income Attributable to Parent	$ (17,461)	$ 370,839	(33,038)	361,398
SAFE
Schedule of Equity Method Investments [Line Items]
Revenues			77,518	41,500
Expenses			49,200	24,421
Net Income Attributable to Parent			$ 29,861	$ 11,142