Schedule III - Real Estate and Accumulated Depreciation Reconciliation of Land and Buildings and Improvements (Details) - USD ($) $ in Thousands	4 Months Ended	8 Months Ended	12 Months Ended
	Dec. 31, 2017	Aug. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Sep. 01, 2017	Dec. 31, 2014
SEC Schedule III, Real Estate and Accumulated Depreciation Disclosure [Abstract]
SEC Schedule III, Real Estate Accumulated Depreciation	$ (18,533)	$ (740,504)	$ (716,376)	$ (697,386)	$ 0	$ (661,758)
SEC Schedule III, Real Estate, Gross	2,398,753	2,004,598	2,108,117	2,229,492	$ 2,537,854	$ 2,062,289
SEC Schedule III, Real Estate, Improvements	22,305	30,403	20,973	15,324
Payments to Acquire Real Estate	0	0	8,226	0
Real Estate, Completed Hotel Development	0	0	0	299,341
SEC Schedule III, Real Estate, Cost of Real Estate Sold	(161,406)	(133,922)	(150,574)	(147,462)
Real Estate, Cumulative Impairment Charges on Real Estate Assets Owned	0	(55,145)	(75,227)	(76,008)
Real Estate, Net of Impairment	2,398,753	1,949,453	2,032,890	2,153,484
SEC Schedule III, Real Estate Accumulated Depreciation, Depreciation Expense	(19,518)	(37,966)	(57,044)	(57,022)
SEC Schedule III, Real Estate Accumulated Depreciation, Real Estate Sold	$ 985	$ 13,838	$ 38,054	$ 21,394