Shareholders' Equity - Schedule of AOCI (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Rollforward]
Beginning balance	$ 2,102,790	$ 2,505,878	$ 2,597,431
Other comprehensive income	1,539	(760)	91
Amounts reclassified from cumulative other comprehensive income to net income	0	0	175
Ending balance	1,555,306	2,102,790	2,505,878
Cumulative Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss) [Rollforward]
Beginning balance	(760)	0	(266)
Amounts reclassified from cumulative other comprehensive income to net income			175
Ending balance	779	(760)	0
Equity in Unrealized Gain (Loss) of Investees
Accumulated Other Comprehensive Income (Loss) [Rollforward]
Beginning balance	(760)	0
Other comprehensive income	1,539	(760)
Amounts reclassified from cumulative other comprehensive income to net income	0	0
Ending balance	$ 779	$ (760)	$ 0