Earnings Per Share - Basic and Diluted Components (Details) - USD ($) $ in Thousands	3 Months Ended								6 Months Ended		9 Months Ended		12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Numerator:
Net (loss) income attributable to common shareholders	$ (484,105)	$ (65,217)	$ (9,414)	$ (37,445)	$ (19,277)	$ (18,366)	$ (17,351)	$ (30,560)	$ (46,859)	$ (47,911)	$ (112,076)	$ (66,277)	$ (596,181)	$ (85,555)	$ (85,660)
Denominator:
Weighted average number of common stock outstanding		371,010,544	316,645,050	305,192,201	260,053,150	236,759,521	231,114,868	220,605,068	310,918,626	225,899,224	330,949,265	229,519,323	354,790,106	237,152,780	218,882,337