Investments in and Advances to Unconsolidated Affiliates - Schedule of Share of Net Income From Unconsolidated Affiliates (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Equity Method Investments And Joint Ventures [Abstract]
Income from unconsolidated affiliates	$ 31,766	$ 39,766
Preopening and start-up expenses	(3,321)	0
Non-operating items from unconsolidated affiliates	(9,010)	(6,921)
Net income from unconsolidated affiliates	$ 19,435	$ 32,845