Noncontrolling Interests - Components of Net (Loss) Income Attributable to Noncontrolling Interests (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Noncontrolling Interest [Line Items]
Net (Loss) Income Attributable to Noncontrolling Interests	$ (26,085)	$ (7,234)
Group A Units
Noncontrolling Interest [Line Items]
Net (Loss) Income Attributable to Noncontrolling Interests	(25,337)	(7,369)
Other
Noncontrolling Interest [Line Items]
Net (Loss) Income Attributable to Noncontrolling Interests	$ (748)	$ 135