Supplemental Information to Statements of Cash Flows (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Non Cash Investing and Financing Information [Line Items]
Interest paid, net of capitalized interest	$ 69,680	$ 29,389
Income taxes paid	2,569	2,288
Non-Cash Investing and Financing Activities:
Distributions payable on shares/units	58,436		$ 43,759
Accrued additions and improvements to hotel properties	6,754	593
Right of use assets obtained in exchange for lease liabilities	257,167	0
Purchase of ground lease	16,604	0
Write-off of deferred financing costs	2,697	0
Common shares/units
Non-Cash Investing and Financing Activities:
Distributions payable on shares/units	50,878	28,205
Preferred shares
Non-Cash Investing and Financing Activities:
Distributions payable on shares/units	7,558	3,442
Board of Trustees compensation
Non-Cash Investing and Financing Activities:
Issuance of shares/units	$ 740	$ 662