Acquisitions - Preliminary Purchase Price Allocation (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Nov. 02, 2015	Dec. 31, 2014	Dec. 31, 2013	Oct. 01, 2013
Business Acquisition [Line Items]
Goodwill	$ 1,063,200		$ 1,002,129	$ 1,042,153
Bit-isle [Member]
Business Acquisition [Line Items]
Cash and cash equivalent		$ 33,198
Accounts receivable		7,359
Other current assets		51,038
Long-term investments		3,806
Property, plant and equipment		308,985
Goodwill		95,444
Intangible assets		111,374
Other assets		22,981
Total assets acquired		634,185
Accounts payable and accrued expenses		(15,028)
Accrued property, plant and equipment		(465)
Capital lease and other financing obligations		(108,833)
Mortgage and loans payable		(190,227)
Other current liabilities		(8,689)
Deferred tax liabilities		(32,192)
Other liabilities		(3,384)
Net assets acquired		$ 275,367
Frankfurt Kleyer 90 Carrier Hotel Acquisition [Member]
Business Acquisition [Line Items]
Property, plant and equipment					$ 85,969
Intangible assets					10,011
Total assets acquired					95,980
Mortgage and loans payable					(42,906)
Intangible - unfavorable leases					(2,982)
Net assets acquired					$ 50,092