Property and Equipment - Property and Equipment (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Property and Equipment, gross	$ 3,176,202	$ 3,144,970
Accumulated depreciation	(1,147,680)	(1,076,973)
Property and equipment, net	2,028,522	2,067,997
Land and land improvements [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment, gross	244,610	242,418
Buildings [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment, gross	2,319,710	2,300,499
Furniture, fixtures and equipment [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment, gross	584,973	576,209
Construction-in-progress [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment, gross	$ 26,909	$ 25,844