Schedule III-Reconciliation of Carrying Amounts and Accumulated Depreciation (Details) - Hotel properties - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Reconciliation of land and buildings and improvements
Balance at the beginning of the year	$ 3,551,715	$ 3,595,301	$ 3,654,623
Acquisitions	1,296	704	15,147
Improvements	47,547	78,579	96,481
Impairment losses	(252,909)	(34,888)	(1,797)
Changes in reporting presentation		(58,799)	171,675
Dispositions	(252,687)	(29,182)	(340,828)
Balance at the end of the year	3,094,962	3,551,715	3,595,301
Reconciliation of accumulated depreciation
Balance at the beginning of the year	888,378	815,628	776,077
Depreciation	101,218	107,949	108,175
Impairment losses	(137,292)	(12,572)	(491)
Changes in reporting presentation		(9,677)	57,363
Retirement	(80,015)	(12,950)	(125,496)
Balance at the end of the year	$ 772,289	$ 888,378	$ 815,628