Exchangeable Senior Notes - Interest Cost Recognized (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Debt Disclosure [Abstract]
Contractual interest	$ 0	$ 13,476	$ 17,968
Amortization of discount	0	3,675	4,742
Total interest expense recognized	$ 0	$ 17,151	$ 22,710